Balas Blog..

Sync Fushion Grid Control

2011-05-03T11:17:00.000-07:00

i have come across situation like to increase the performance Sync fusion
Grid control. for that have tried all our asp.net datasource. but we couln't able to
increase. finally found Sync fusion control itself having data source object (Grouppassdatasource).

Grouppassdatasource:

which will connect from datacontext.

Datacontext.

you have to create using link to sql data file (deml extension).

Sync fusion datasource name is GroupPassdatasource

Note: GroupPassdatasource should be with update panel

Motion Framework in Infragistics

2010-12-09T12:11:00.000-08:00

Infragistics come up with the new technology called "motion frame work". which will give the full feature of visualization of the data in the impresive manner and animated experience.

It will be mainly used across the Silver light and wpf data visualization applications.

Running earlier version of Existing application in VS 2010.

2010-12-09T12:00:00.000-08:00

Microsoft come with new option to build the existing application. I am really love to learn the new building option. It's really a simple step to complete the existing
lower version ( for example .net 2.0) application to building in the Visual studio 2010. Thanks to microsoft. The below element have to implement in the web.config file with the version details.

Element Name: in application configuration file.

URL Mapping in Visual studio 2010

2010-12-05T23:39:00.000-08:00

visual studio come up with new feature called url mapping

There is method called "Response.RedirectPermanent()" will be used to map the url instead of using web.config method in the earlier version of Visual studio.

Visual Studio 2010 Part 1

2010-01-13T12:24:00.000-08:00

I have been to VS 2010-ALM finals at Taj Residency in Bangalore. It’s really a very informative and fun session. I am just writing in my blog to share with you all. Let‘s talk about the speaker.
His name is Teju’s from Microsoft Bangalore. He is a great Man and great attitude and more over is active and young. He has shown many features with us about visual studio 2010. Let’s talk one by one.

My view of session it was great and very informative. Really visual studio 2010 will rock soon all your system. Now we have Beta. Try the nice feature and rock.Carrier perspective it’s going to create lot of opportunities. Really you will love it and do it.

Microsoft comes up with the different packages for Visual studio 2010.
Visual Studio 2010-Ultimate.
This is comprehensive suite of application life cycle management tools for teams to ensure quality results from design to development.

Visual Studio 2010- Premium.
A complete tool set for developer to deliver scalable high quality applications.

Visual Studio 2010- Professional.
This is essential tool set for doing basic development tasks to allow developers to implement their ideas easily.

Visual Studio Test Elements-2010
This is separate tool apart from vsts 2010. This is specifically for the tester.
VSTS 2010 had plenty of improvements and new features. Let’s talk about some coolest and hottest feature.

Debugging and diagnosis:
1) Intelli trace.
a. It’s one of the best feature ever never heard from any other development areas.
This is give you exact definition about the problem. When we have situation like in production environment user’s are having some issues but not having in the other environment. That time only our Intellin trace comes in to picture.

2) Static Code Analysis.
It’s one of the coolest features. Using this tool can define the best practices of the code.
If you not followed the best practices and build will fails.
3) Code Metrics.
User can see the chart level description about the code.
4) 64 Bit Support.
5) Break point Improvement.
a. Filtering
b. Label attachment for each break point.
Architectural Complaints:
1) Layer Diagram:
This is one of the nice features once you assign the layer for the solution. It should stick on that.
2) One shot all dependencies can show.
3) UML Added.
WPF Improvements:
1) Touch Input can possible now.
2) Added new controls like Data grid and Date Picker.
Deployment:
1) One click deployment as like as f5.
Silver light:
1) Siliverlight template added.
Chart Controls
Now in vs2010 added chart control no need to use other third party controls. it available.
Also supports 3D.
Cloud Application
It’s possible with Window Azure.
Share Point
Now we have the project template for share point. All the manipulation can be done through this.
Team Foundation Server:
1) Gated check in.
It’s really coolest feature and user friendly to do it. There is a situation like developer always breaks build. For that we have gated check in to restrict to check in.
2) Self test.
Data can be saved temporarily not in the server location.
3) TFS-Web
Now also can see who is working what like that information can trace from anywhere else.
4) Packages
Now we are able to create packages. Maintainability is good.
Now parent and child hierarchy are available
Branch creation and merging are available.
Database Development:
1) Import schemas.
2) Synchronization available with offline and online.
3) Refactoring database.
Testing
It support’s manual and automated. This is separate development environment.
1) Unit Test wizard.
2) Data driven test.
3) Code coverage.
4) Test impact analysis.
5) Coded UI test with record UI functionality as like mercury and more than.
This is just introduction part. Hope will see many articles about VS2010.

Webservices using Silverlight 2.0

2010-01-11T13:43:00.000-08:00

In silverlight can't connect directly to the database. it can only connect through webservices.
Before connecting to webservices. we should aware of security, data integrity, binding, performance.
using silverlight user connect diferent services.the services are webservice, WCF service and REST.
hope know about webservice and wcf, so all are asking about REST. Rest means RePresentation of state transition.
through webclient and httpwebrequest can connect and get the response.
usually webservices can connect through http. while connecting you have to maintain the thread. it's should
run with in thread only. if you not connect through proxy. you should maintain the thread. other wise it would
be problem.
Method 1:
Calling ASMX webservices.
Step 1:
Create asmx webservice and in to silverlight application as a service reference.
Step 2:
ADD namespace in the using section.
Step 3:
Get path of asmx file through this method.
public string GetURLforResource(string resourcePage)
{
string webURL = HtmlPage.Document.DocumentUri.ToString();
string containerPage = webURL.Substring(webURL.LastIndexOf("/") + 1);
return webURL = webURL.Replace(containerPage, resourcePage);
}

Step 4:
Call webservice through this. string webServiceURL = GetURLforResource("WebserviceTest.asmx");
BasicHttpBinding binding = new BasicHttpBinding();
WebserviceTestSoapClient webSVC = new WebserviceTestSoapClient(binding,new EndpointAddress(webServiceURL));
webSVC.HelloWorldCompleted += new EventHandler(webSVC_HelloWorldCompleted);
webSVC.HelloWorldAsync();

also for the method has to create the eventhandler.
Step 5:
This is the event handler to display the result of the webservice method.
void webSVC_HelloWorldCompleted(object sender, HelloWorldCompletedEventArgs e)
{

HtmlPage.Window.Alert(e.Result);
}

Method 2:
Calling WCF service.
Everything same as like the above. one thing must to do in web.config.
while creating wcf it will add automatically binding as wsHttpBinding instead of that
have to modify basicHttpBinding.
Method 3:
Coming soon

-

Navigation between XAML Pages using Silverlight 2.0

2010-01-08T14:00:00.000-08:00

Before going in to navigation one thing keep in mind there is no direct way for navigating the xaml files in Silverlight 2.0.
Ok fine let's start our navigation journey. I have two ways to navigate between the xaml files.
let me explain one by one.
# Method 1: Using App.XAML
Step 1:
There is a Application_startup event in App.XAML which will decide the initial load page.
Before that comment all the line in this method. (Example://this.RootVisual = new Page();)
Here in this have to do some little trick.
Step 2:
Declare one public Grid outside the event.
like this: public static Grid root;
and then write this code in the application Startup event.

private void Application_Startup(object sender, StartupEventArgs e)
{
root = new Grid();
root.Children.Add(new Login());
this.RootVisual = root;
}

here only we are adding Grid as a parent control. under that we have xaml page.
Step 3:
Create one more method for navigation.
public static void Navigate(UserControl newPage)
{
UserControl oldpage = root.Children[0] as UserControl;
root.Children.Add(newPage);
root.Children.Remove(oldpage);
}
This is the method will navigate one xaml to another xaml. Basically it's just removing the old page and adding new page.
The above all three steps only in the App.XAML file.
Step 4:
Now come to Login.Xaml, this is the inital page which will load from App.XAML.
After successing the login user has to navigate to productlist page.
The below code will navigate to product list page.
private void Login_Success_Click(object sender, RoutedEventArgs e)
{
App.Navigate(new Product());
}

#Method 2:
This is better approach compare to above.
In the silverlight application should have two files.
1) App.XAML2) Master.XAML
here in Master is the common file which will navigate the files through this.
let me go through step by step:
Step 1:
In the application_startup event load the Master.XAMl (Remove Automated code)
private void Application_Startup(object sender, StartupEventArgs e)
{
this.RootVisual = new Master();
}

Step 2:
In the master page clear all the content except usercontrol tag.
<UserControl x:Class="SilverlightThird.Master" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="400" Height="300"> </UserControl>
Step 3:
In the code behind of Master page write the below code.
public partial class Master : UserControl
{
public Master()
{

InitializeComponent();
if (this.Content == null)
{
this.Content = new Login();
}
}

public void Navigate(UserControl Nextpage)
{
this.Content = Nextpage;
}
}

Step 4:
Now come to Login.xaml file.
In the success method of login.xaml.cs file write this below it will navigate.

hope this will help.

Custom Fonts in Silverlight 2.0

2010-01-08T12:59:00.000-08:00

Hi all today i have learned something called custom fonts in silverlight 2.0.
it's really surprising me, it's very good feature.
follow the below stpes to create custom fonts in silverlight 2.0

Step1:
Create one silverlight applicaton. mean while get ttf extension file name.
Note: ttf is the extension for font.
step2:
Add atleast one ttf file in to our project folder
Example:webdings.ttf
step3:
after adding in to our project. add the code like the below in example.
then you will get the custom fonts in your browser.
Syntax:
FontFamily="Font_File_Name#Font_Name”
Example:
<TextBlock FontFamily="webdings.ttf#webdings" Text="Test"> </TextBlock>

Note:font_file_name and font_name is different except few.
if you give correct font_name then only it will work.

Accesssing Client bin Images in XAML.

2010-01-08T09:59:00.000-08:00

In the client can not only xap file also can contain images. Those images can acccess from silverlight application.

Client Bin
Bluehils.jpg
imageaccess.xap

the above two files are there in the client bin.

if you want to access that image have to simple thing.

<Image Source="/Bluehills.jpg"> </Image>

Note:"/"

Stylesheet using Silverlight.

2010-01-07T08:05:00.000-08:00

In silverlight having different approach to creating styles. also styles can write in app.xaml in silverlight application.
app.xaml is a application resource file. it will shares styles accross all the pages.
also it will maintain all the configuration details.
This is the syntax for creating styles in App.XAML.

<Application.Resources>
<Style x:Key="stTextblock" TargetType="TextBlock"> <
Setter Property="Foreground" Value="Red"/> </Style>
</Application.Resources>

we can call this style accross all the pages and it's applicable only for TextBlock controls.

<Grid x:Name="LayoutRoot" Background="White">
<TextBlock x:Name="txtShow" Style="{StaticResource stTextblock}" Text="Bala">
</TextBlock> </Grid>

Best Practices for keeping large number of images in Silverlight

2010-01-05T12:41:00.000-08:00

Before creating silverlight application. Create seprate soltion for keeping large number images.Application performance will increase. also maintaining the application will be easy.

Step 1:
Create one silverlight application.
step 2:
Create silverlight class library.The name of the project solution is "Resource"
step 3:
maintain all the images under "Resource" library.
step 4:
Add the "Resouce" reference to silverlight application.
step 5:
Bind the images in to silverlight application.
Example
like this:<image source="Resource;component/picture/winter.jpg>
"Reource" is Assembly or application name.

Picture is folder name

SLsvcutil.exe in silverlight

2010-01-05T11:12:00.000-08:00

Generating Proxies for WCF Services in Silverlight.
The only way to generate the proxies in silverlight 2 through service reference.
But in silverlight 3 is different. it's having command line tool to geneate the proxies.
SLsvcutil.exe.
happy coding with silverlight.

Silver light 2.0 Timer

2009-12-29T09:09:00.000-08:00

I have seen many forums asking about the timer so i thought i'd toss up a simple example.
To create timer have to use Dispatchtimer in System.Windows.Threading.
Go through the below example.
<Canvas>
<Canvas.Resources>
<Storyboard x:Name="Timer">
<DoubleAnimation Storyboard.TargetName="rectTimer" Storyboard.TargetProperty="Width" BeginTime="0:0:0" Duration="2"></DoubleAnimation>
</Storyboard>
</Canvas.Resources>
<Rectangle Loaded="rectTimer_Loaded" Visibility="Collapsed" x:Name="rectTimer">
</Rectangle>
</Canvas>

private void rectTimer_Loaded(object sender, RoutedEventArgs e)
{
System.Windows.Threading.DispatcherTimer myDispatcherTimer = new System.Windows.Threading.DispatcherTimer();
myDispatcherTimer.Interval = new TimeSpan(0, 0, 0,1, 100);
myDispatcherTimer.Tick +=new EventHandler(myDispatcherTimer_Tick);
myDispatcherTimer.Start();
}
void myDispatcherTimer_Tick(object sender, EventArgs e)
{
HtmlPage.Window.Alert("TickEvent");
}

Making Transparent In Silverlight..

2009-12-28T10:50:00.000-08:00

Now take a example of grid
Example:
<Grid x:Name="LayoutRoot" Background="{x:Null}">

How do we extract "XAP" file in Silverlight?

2009-12-28T10:13:00.000-08:00

It's like archive and contains all the resources of silverlight application.
How do we extract xap file?
Step1:
Copy the xap file from clientBin and store in desktop of your machine.
step2:
change the extension in to zip
Example:
test.xap
test.xap.zip
Now you can extract the file.
it's contains one dll and asemblymanifest.info

Event Handler Using Silverlight

2009-12-28T09:24:00.000-08:00

It's possible to create the eventhandler through XAML. also using codebehind can attach
event dynamically. It's usefull for dynamically craeate controls.
Example:
<Button Name="btnTest" Content="Test" Width="100" Background="Blue" Margin="1" Height="25"></Button>
public Page()
{
InitializeComponent();
btnTest.Click += btnTest_Click; //Attach Event
btnTest.Click -= btnTest_Click; //Detach Event
}

void btnTest_Click(object sender, RoutedEventArgs e)
{
MessageBox.Show("Hi How are you");
}

What is use of AppManifest.xml and Assemblyinfo.cs in Silverlight

2009-12-28T08:41:00.000-08:00

App(Application) Manifest.
This is the place where we can find the list of assemblies used in the application.
Location Path:Properties/AppManifest
ApplicationInfo
It's contains the information about the project like version, name and publisher.
Location: Properties/Assemblyinfo.cs

HtmlPage.Window.Invoke in Silverlight

2009-12-23T13:27:00.001-08:00

This method will invoke the javascript method from code behind.
Example

Page.xaml
<UserControl x:Class="_22Dec2009.Page" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="1024" Height="800"> <Grid x:Name="LayoutRoot" Background="White"> <Border BorderThickness="2" BorderBrush="AliceBlue" CornerRadius="2" Margin="3"> <Button x:Name="Test" Click="Button_Click" Content="Test" Background="AliceBlue" Width="30" Height="20"> </Button> </Border> </Grid></UserControl>
Page.xaml.cs
This is code it will call the javascript method.
private void Button_Click(object sender, RoutedEventArgs e)

{ HtmlPage.Window.Invoke("getAlert", false); }
Default.aspx
<script language="javascript">
function getAlert() {
alert("sdf"); } </script>
Have you noticed in the eventargs. here in silverlight different..

Note:
Also we can call the javascript method throgh this code.
HtmlPage.Window.CreateInstance("getAlert", false);
happy coding! Enjoy

Response Redirect in Silverlight.

2009-12-23T13:07:00.001-08:00

here in silverlight we have to use below code navigate to from one pages to another pages.
in the code we can mention target as well as browser features like height width....

Example
HtmlPage.Window.Navigate(new Uri("http://www.google.com"),"_blank","width:100,height:20");

Full Screen Options in Silverlight.

2009-12-23T12:46:00.000-08:00

i am just come to know in silverlight from the coding level we can make full screen for the browser.

This is namespace have to use for the making the full screen.
System.Windows;
Example code is
Application.Current.Host.Content.IsFullScreen=!Application.Current.Host.Content.IsFullScreen

Content Delivery Network.

2009-12-16T05:12:00.000-08:00

Scott Guthrie has announced last september. This is one of the greatest improvement for who ever using Ajax in their application. Generally when we use Ajax all the library files will be loaded from our own server.

when end user accessing this site it has to travel through wire from few hundred miles to thousand miles.for avoiding these microsoft come up with new network called "Content Delivery Network".
if we use this in our project the performance will increase.

let me explain how it will increase the performance. suppose if you are accessing the site in India.
Content delivery network will find the shortest distance network and then it will load the all library files.
Instead of loading from one place.
Example:
<script src="http://ajax.microsoft.com/ajax/jquery/jquery-1.3.2.min.js" type="text/javascript"></script>
instead of mentioning our own path

Materialized Views in Oracle

2009-12-02T03:53:00.000-08:00

In some scenarios, you won't be in a position to improve the performance of a query without changing the database design. In those scenarios you can think of using materialized view.

Materialized view is a database object that contains the result of a query (it actually contains the rows).

SQL> create materialized view mview
2 build immediate
3 refresh complete on demand
4 as select count(1) from
5 (select state,zip,city,count(1) from mv_test1 group by state,zip,city);

Materialized view created.

Depends on the REFRESH mode specified MV will be refreshed ON DEMAND, ON COMMIT or at specific time.

Advantage:
Main advantage is Improved query perfomance.

Example:
Same query which is used to create the MV is executed here and it took 1.26 secs.

SQL> select count(1) from
2 (select state,zip,city,count(1) from mv_test1 group by state,zip,city);

COUNT(1)
----------
347

Elapsed: 00:00:01.26.

But selecting from MV took 0.01 seconds.

SQL> select * from mview ;

COUNT(1)
----------
347

Elapsed: 00:00:00.01

Disadvantage:

If you use refresh option as ON COMMIT and the MV is created on a transaction table which go through several DML operations, DB resources will be utilized to refresh the MV, and in turn it will slow down the db performance.

"String Builder" function in Javascript using Ajax(Enabling Scriptmanager).

2009-11-24T06:31:00.000-08:00

I have come across new functionality called "stringbuilder" in javascript using Ajax.

please follow the below steps to enable the Stringbuilder.

Step 1:

Add script manager tag in the aspx page.

Step 2:

Example:

<script type="text/javascript">
function buildAString(title)
{
var headTagStart = "";
var headTagEnd = "";
var titleTagStart = "";
var sb = new Sys.StringBuilder(this._headTagStart);
sb.append(titleTagEnd);
sb.append(title);
sb.append(titleTagEnd);
sb.append(headTagEnd);
// Displays: "The result: "
alert("The result" + sb.toString());
}
var title = "A Title";
buildAString(title);
</script>

Calling Parent Method from child control using Events & Delegates.

2009-11-11T01:50:00.000-08:00

Before starting we should very clear about event and delegate

Event: it's handler which will call the delegate and it will call the method.

Delegate: it's a function pointer, it will point to the particular function.

Let me explain about calling parent method from the child control.

Step 1: create one aspx pages and usercontrol pages.

step 2:

In the usercontrol create one button and lable. The scenoria is like this when user click on the button has to call the child method as well as the parent method.

Step 3:

Create one user control with the following code.

Childcontrol.ascx

<asp:Button ID="btnShow" runat="server" />
<asp:Label ID="lblShow" runat="server"></asp:Label>

Childcontrol.ascx.cs

public delegate void callDelegate();
public event callDelegate callEvent;

protected void Page_Load(object sender, EventArgs e)
{
btnShow.Click += delegate
{
lblShow.Text = "Hi how are u";
this.showData();
};
}
protected virtual void showData()
{
if (this.callEvent != null)
{
this.callEvent();
}
}

Step 4:

Create one aspx page with name of Parent with the following code.

parent.aspx

<%@ Register Src="~/UserControl/Childuser.ascx" TagPrefix="child" TagName="UC" %>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="lblParent" runat="server"></asp:Label>
<child:UC id="UC1" runat="server"></child:UC>
</div>
</form>
</body>
</html>

parent.aspx.cs

protected void Page_Load(object sender, EventArgs e)
{
UC1.callEvent += new Childuser.callDelegate(UC1_callEvent);
}

void UC1_callEvent()
{
lblParent.Text = "Hi Parent";
}

Base Pages using C#.Net

2009-11-09T07:24:00.000-08:00

Now i am come with the scenario clearing the session on each page writing the code.
for clearing the session in common place.
we can use some thing called base pages. so that we can keep the code in seprate place.
Step 1:
Create one class file with the name of basepages.cs.
This will contain the one method which will clear the session objects permanently.
Example:
public class BasePages:System.Web.UI.Page
{
public void clearSession()
{ if (Page.User.Identity.IsAuthenticated == false)
{ Session.Abandon();
Response.Redirect("login.aspx");
}
}
}
step 2
Create one login with the extension of .Aspx page.in the code behind just inherit that base class method.
public partial class SessionCheck : Performance.BasePages
{
protected void Page_Load(object sender, EventArgs e)
{
base.clearSession();
}
}

Memory Profiler.

2009-11-05T01:10:00.000-08:00

This is the tool which will find out memory leakage. using this we can fine tune the code.

download: http://memprofiler.com/

function overloading method in webservice.

2009-10-29T03:06:00.000-07:00

It's not as direct like class overloding. In webservice we have to enable some settings for
enabling the function overloading. follow below steps.

1. Must Set Attributes of Web service. 2. Set binding ConformsTo = WSIProfile.None.
Sample Class with couple of overloaded methods which exposes as a webservice
Example:
Sample: using System;using System.Web;using System.Web.Services;using System.Web.Services.Protocols;
[WebService(Namespace = "http://tempuri.org/")]// set Binding information[WebServiceBinding(ConformsTo = WsiProfiles.None)] public class Service : System.Web.Services.WebService{ public Service () { //Uncomment the following line if using designed components //InitializeComponent(); }
// Set Message Name [WebMethod(MessageName="Add int Field")] public int Add(int a, int b) { return a + b; }
// Set Message Name [WebMethod(MessageName="Add float Field] public int Add(float a, float b) { return a + b; }}

Health monitoring

2009-10-28T04:14:00.000-07:00

Health monitoring in the Web.config file.

This is nice feature in the dotnet frame work 3.5

it will automatically write the event log, When you will not handle the exception in the application,

<system.web>
<healthMonitoring enabled="true"></healthMonitoring>
</system.web>

Calling method from one user control from other usercontrol with out using property.

2009-10-26T06:21:00.000-07:00

Take this scenorio, i have button and event in the first user control.

and i have label in the other usercontrol.

when i click on the button have to assign some value for label of other usercontrol with

out using the property

Step 1:

create first user control with following control and method.

<asp:Button ID="btnSubmit" onclick="btnSubmit_Click" runat="server" Text="Submit" />

public void btnSubmit_Click(object sender, EventArgs e)
{
test2 t2 = (test2)Page.FindControl("test2");

t2.callBTN(sender, e);

}
step 2:

create second user control with label with assigning value.

<asp:Label ID="lbltest" runat="server"></asp:Label>

public void callBTN(object sender, EventArgs e)
{
lbltest.Text = "DDDD";
}

Enabling the zoom in and zoom out facility for image using Seadragon control in ajax.

2009-10-26T00:07:00.000-07:00

I have come across new control in ajax zooming and zoom out for image. it's quite very
simple to implement this functionality.. it's nice feature thanks to Ajax team.

Step 1:

Create one xml file with the following attributes with tag. these are the attribute and tag will describe the functionality.

<Image TileSize="256" Overlap="1" Format="png" ServerFormat="Default">
<Size Width="1024" Height="768"/>
</Image>

Step 2:

create css class with image.

step 3:

<ajaxToolkit:Seadragon ID="Seadragon"
runat="server"
SourceUrl="sample.xml"> //Step1
CssClass="seadragon" //step 2
<ajaxToolkit:Seadragon>

Showing context menu in the ultrawebgrid using javacript.

2009-10-23T03:09:00.000-07:00

Showing context menu in the ultrawebgrid using javacript.

step1:

Create ultrawebgrid with Rowselection.(if not choose selected row property getActiveRow method will not work)

step2:

create web menu with property setting of Popupmenu.

step3:

Calling showmenu function from gridcell click of ultrawebgrid.

step4:

function showmenu(objGrid,objGridid,button)
{

var grid = igtbl_getGridById(objGrid);
if(grid.getActiveRow()!=null)
{
if(button==2)
{
igmenu_showMenu('uwmContextmenu',event);
return true;
}
}
else
{
alert("Please select atleast one row");
return false;
}
}

opening Infragistics webdialogwindow using javascript.

2009-10-23T02:42:00.000-07:00

opening Infragistics webdialogwindow using javascript.

var dialogObject = $find("WebDialogWindowSchedule");

dialogObject.get_contentPane().set_contentUrl(TargetURL);

dialogObject._header.setCaptionText("Welcome");

dialogObject.show();

In our project we have to give option like. when ever click on the context menu.

have to show the webdialog window.

While loading have to hide the webdialogwindow. only when we click on the context menu

have to show the dialog. for that have to make width and height 0. when we click on the

context menu have to assign the widht and height.

We have come across some performance issue in the ultrawebgrid.

2009-10-23T01:26:00.001-07:00

Please follow the below rules while doing code with infragistics.

1). Don't add dynamic controls in the Initialize row of the ultrawebgrid.

2). Use PreRender event of ultrawebgrid adding dynamic controls.

3). declare all the styles and properties in the code behind.

Explain.

if you declare properties of ultrawebgrid in the aspx. it will take more time to render. so always try to put in the codebehind.

how to restrict back button using asp.net.

2009-10-22T07:57:00.001-07:00

We have come across the problem while clicking on the back button in the browser.

we shouldn't load the page again when we click on the back button.

Below code it will hide the back button. This is also one of the security leavl have to

follow in the transaction pages.

Response.Buffer = true;
Response.CacheControl = "no-cache";
Response.Cache.SetNoStore();
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetExpires(DateTime.Now.AddDays(-1));

Downcasting in OOPS

2009-10-20T04:50:00.000-07:00

Assinging the parent class to child class this is called downcasting.

public class Class1
{
public string getValue()
{
return "sd";
}
}

public class class3 : Class1
{
public string GetValue1()
{

class3 cl =(class3) new Class1();
return cl.getValue();

}
}

Upcasting in OOPS

2009-10-20T04:24:00.000-07:00

assigning the child class to the parent class that is called the Upcasting

public abstract class Class1
{
public string getValue()
{
return "sd";
}
}

public class class3 : Class1
{
public string GetValue1()
{
Class1 SS =new class3();
return SS.getValue();
}
}

Reading and adding controls dynamically for templated Column in ultrawebgrid.

2009-10-20T03:05:00.000-07:00

I have come across performance issue when we add the controls in the initialize row of ulrtrawebgrid. so i have decided to move in to prerender controls.

After moving the controls in to prerender performance got increased.

void uwgProduct_PreRender(object sender, EventArgs e)
{
TemplatedColumn col = (TemplatedColumn)uwgProduct.DisplayLayout.Grid.Bands[0].Columns.FromKey("HeaderCheck");
TemplatedColumn colChild = (TemplatedColumn)uwgProduct.DisplayLayout.Grid.Bands[1].Columns.FromKey("ChildCheck");
int rowTotalCount = uwgProduct.Rows.Count;
///Header////
for (int rowcount = 0; rowcount <>
{

CellItem objcellITem = (CellItem)col.CellItems[rowcount];
HtmlInputCheckBox htmlCheck = new HtmlInputCheckBox();
htmlCheck.Attributes.Add("onclick", "selectEachParent(event,this.value)");
htmlCheck.Attributes.Add("id", Convert.ToString(objcellITem.Value));
htmlCheck.Value = Convert.ToString(objcellITem.Value);
objcellITem.Controls.Add(htmlCheck);
}
////Header/////

////Child Display////////
int childTotalCount = colChild.CellItems.Count;
for (int childCount = 0; childCount <>
{
CellItem objcellITem = (CellItem)col.CellItems[rowIndex];
CellItem objcellITemChild = (CellItem)colChild.CellItems[childCount];
HtmlInputCheckBox htmlCheckChild = new HtmlInputCheckBox();
htmlCheckChild.Attributes.Add("onclick", "UnselectParent(event,this.value)");
htmlCheckChild.ID = Convert.ToString(objcellITem.Value) + "_" + Convert.ToString(objcellITemChild.Value);
htmlCheckChild.Value = Convert.ToString(objcellITem.Value) + "_" + Convert.ToString(objcellITemChild.Value);
objcellITemChild.Controls.Add(htmlCheckChild);
}
////End Child Display////////
}

Infragistics WebDataGrid validation.

2009-10-20T02:59:00.000-07:00

In our project we need to do validation for webdatagrid using javascript.

var Gkey,GIndex;
function EnterEditModeValidate(objGrid,Obj1Edited)
{
Gkey = Obj1Edited._cell._column._key;
GIndex = Obj1Edited.getCell().get_row()._index;
}
function ExitingEditValidate(sender,evntArgs)
{
//var index=sender.get_columns().get_columnFromKey(Gkey).get_index();
//var value=sender.get_rows().get_row(GIndex).get_cell(index).get_value();
var innT = document.getElementById("wdgProductList_ed0");
var iChars = "!@#$%^&*()+=-[]\\\;,./{}|\":<>?~_";
if(innT!=null)
{
var sValue = innT.children[0].value;
if(Gkey=="ShipAddress")
{
if(sValue=="")
{
alert("Please enter the value");
evntArgs.set_cancel(true);
}
if(sValue.length > 40)
{
alert("Charecters should be below 40");
evntArgs.set_cancel(true);
}
for (var count = 0; count <>
{
if (iChars.indexOf(sValue.charAt(count)) != -1)
{
alert ("Your string has special characters. \nThese are not allowed.");
evntArgs.set_cancel(true);
}
}
}
}
}

Adding controls in to ultrawebgrid using PreRenderMethod.

2009-10-15T04:48:00.000-07:00

TemplatedColumn col = (TemplatedColumn)uwgProduct.DisplayLayout.Grid.Bands[0].Columns.FromKey("HeaderCheck");
int rowTotalCount = uwgProduct.Rows.Count;
for (int rowcount = 0; rowcount < rowTotalCount; rowcount++)
{
CellItem objcellITem = (CellItem)col.CellItems[rowcount];
DropDownList drp = new DropDownList();
drp.Items.Add(new ListItem("test", "ss"));
drp.ID = "dd";
objcellITem.Controls.Add(drp);
}

Special Character Validation

2009-10-09T03:03:00.000-07:00

Date Compare Function

2009-10-09T03:00:00.000-07:00

Asp DataGrid with Editable cell with out Postback using Javascript

2009-08-21T01:41:00.000-07:00

This is created for one of my friend. he want's in his project. so i thought of sharing with everyone am writing in my blog.

step 1:

create asp grid control with binding dummy value.

step 2:

<asp:GridView ID="grView" runat="server" AutoGenerateColumns="false"

onprerender="grView_PreRender">

<asp:TemplateField>

<asp:Label ID="lblID" runat="server" Text='<%# Eval("Empid") %>'></asp:Label>

</div>

<asp:TextBox ID="txtID" runat="server" Text='<%# Eval("Empid") %>'></asp:TextBox>

</div>

</ItemTemplate>

</asp:TemplateField>

</Columns>

</asp:GridView>

step 3:

DataTable DT = new DataTable();

DataColumn dc1 = new DataColumn("Empid");

DataColumn dc2 = new DataColumn("Empname");

DataColumn dc3 = new DataColumn("EmpSalary");

DataColumn dc4 = new DataColumn("EmpAddress");

DT.Columns.Add(dc1);

DT.Columns.Add(dc2);

DT.Columns.Add(dc3);

DT.Columns.Add(dc4);

DataRow DR;

for (int i = 0; i <>

{

DR = DT.NewRow();

DR["Empid"] = i.ToString();

DR["Empname"] = "Bala";

DR["Empid"] = "Salary";

DR["Empid"] = "Address";

DT.Rows.Add(DR);

}

grView.DataSource = DT;

grView.DataBind();

step 4:

Calling javascript for the cell through.

protected void grView_PreRender(object sender, EventArgs e)

{

foreach (GridViewRow dr in grView.Rows)

{

Label lbl = (Label)dr.FindControl("lblID");

lbl.ID = "lblID";

lbl.Attributes.Add("onclick", "javascript:lbltoTxt(this)");

TextBox txt = (TextBox)dr.FindControl("txtID");

txt.Attributes.Add("onblur", "javascript:txttoLbl(this)");

}

Step 5:

function lbltoTxt(obj)

{

var divtxtObj = document.getElementById(obj.id.replace('lblID', 'txtDiv'));

var txtObj = document.getElementById(obj.id.replace('lblID', 'txtID'));

if (divtxtObj != null)

{

if (divtxtObj.style.display == "none")

{

divtxtObj.style.display = "block";

txtObj.focus();

}

var divlblObj = document.getElementById(obj.id.replace('lblID', 'lblDiv'));

if (divlblObj != null)

{

if (divlblObj != null)

{

divlblObj.style.display = "none"

}

function txttoLbl(obj) {

var divlblObj = document.getElementById(obj.id.replace('txtID', 'lblDiv'));

var lblObj = document.getElementById(obj.id.replace('txtID', 'lblID'));

if (divlblObj != null) {

if (divlblObj.style.display == "none") {

divlblObj.style.display = "block";

lblObj.innerText = obj.value;

}

var divtxtObj = document.getElementById(obj.id.replace('txtID', 'txtDiv'));

if (divtxtObj != null) {

divtxtObj.style.display = "none"

}

</script>

What is the use of "Canvas" Controls?????

2009-08-12T06:54:00.000-07:00

Canvas is one of the layout control for the silverlight. This is just like container will contain the controls.

In silverlight wright now we have three layout controls. The layout types are as given below.

1)Canvas.

2)StackPanel.

3)Grid.

My first feel with Silverlight

2009-08-12T06:40:00.001-07:00

first of all have to say thanks to microsoft to developing this kind of product.

I have started learning about the silverlight. it's nearly nice to see in the browser with rich user experience. Really interesting to learn all new controls and new way of approuch. This is really very good treat for dotnet developer.

Let's start learning with next generation technology.

javascript listbox problem

2009-08-10T23:51:00.000-07:00

just thought of sharing this info with everyone. I am writing in my blog.

Every one no about list box control in the asp.net controls. I have tried to write javascript for selected value when enabled the multiselection for the control. In this situation am unable to get the selected value index correctly. it's coming differentyly.. post me if you know the answer..

To fire onclick event automatically on page load using Javascript

2009-08-07T03:47:00.000-07:00

if(navigator.appName !="Microsoft Internet Explorer")

{
HTMLElement.prototype.click = function()

{
var evt = this.ownerDocument.createEvent('MouseEvents');
evt.initMouseEvent('click', true, true, this.ownerDocument.defaultView, 1, 0, 0, 0, 0, false, false, false, false, 0, null);
this.dispatchEvent(evt);
}

}

Avoid Special Character using Javascript with Regular Expression

2009-08-07T03:37:00.000-07:00

javascript validation for special charcter.

function checkSpecial(obj,objEvent)

{

var specialChar = "^[A-Za-z0-9_]+$" //regular expression defining a 5 digit number

var objVal = obj.value;

var objVallen = obj.value.length;

if (objVal != "")

{

if (objVal.search(specialChar) == -1) //if match failed

{

if (objEvent == "keyup") {

if (objVallen > 1) {

obj.value = objVal.substring(0, parseInt(objVallen) - 1);

}

else {

obj.value = "";

}

else {

obj.value = "";

}

alert("Invalid character");

obj.focus();

}

Fileupload control not working with in updatepanel

2009-07-13T05:13:00.000-07:00

I have found the problem, while accessing the fileupload control with in update panel. selected file path get cleared when postback.. i have found one solution for that problem. let me explain the solution with example.

i have used one asp hidden control, using javascript before postback am assigning the path in to hidden control. while accessing server side am getting the path from hidden contrl.

Let's go through the sample.

Aspx Code

<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true">

</asp:ScriptManager>

<asp:UpdatePanel ID="upDate" runat="server">

<asp:FileUpload ID="fileUpload" runat="server" />

<asp:Button ID="btnSave" runat="server" onclick="btnSave_Click" />

<asp:HiddenField ID="hidFileName" runat="server" />

</ContentTemplate>

</asp:UpdatePanel>

Javascript:

function fileUploads(objGetId, objHidId) {

var objfile = document.getElementById(objGetId);

var objhid = document.getElementById(objHidId);

if (objfile != null) {

objhid.value = objfile.value;

}

C# Code

protected void Page_Load(object sender, EventArgs e)

{

btnSave.Attributes.Add("onclick", "javascript:fileUploads('fileUpload','"+hidFileName.ClientID+"')");

// string test = fileUpload.FileName;

}

protected void btnSave_Click(object sender, EventArgs e)

{

string test = hidFileName.Value;

}

ExcelDataReader

2009-07-13T04:17:00.000-07:00

hi guys, This is one of the best approuch for converting excel in to dataset. I am using this in our project. This exceldatareader will read very faster than any other approach so far.

So that we are using in our project. Its very good approach.. let's download in the below url

http://www.codeplex.com/ExcelDataReader

Then include in your project. Just include in your project as a DLL. Then access all the classes.

Parent Child Display using Asp.net 2.0

2009-07-13T02:54:00.000-07:00

I have comeacross some of friends needed this code to create parent and child combination in the webpage.

So thought of sharing them have created sample code for displaying the parent and child combination.

I am using Parent control as a Repeater control and child as a Gridview control.

Please go throgh the example:

Aspx Code:

<asp:Repeater ID="grdMulti" runat="server" OnItemDataBound="grdMulti_RowDataBound">

<tr>

<td>

<tr>

<td>

<img id="imgExpand" runat="server" src="Image/add_up.gif" onclick="javascript:showChild(this)"

style="vertical-align: top" />

<img id="imgCollapse" runat="server" src="Image/del_up.gif" onclick="javascript:showChild(this)"

style="display: none; vertical-align: top" />

</td>

<td>

<asp:Label ID="lblServiceAddress" runat="server" Text='<%# Eval("ServiceId") %>'></asp:Label>

</td>

<td>

<asp:Label ID="Label1" runat="server" Text='<%# Eval("ServiceName") %>'></asp:Label>

</td>

<td>

<asp:Label ID="Label2" runat="server" Text='<%# Eval("ServiceAddress") %>'></asp:Label>

</td>

</tr>

</table>

</td>

</tr>

<td>

<tr>

<td>

<asp:GridView ID="grdChild" runat="server" Width="100%">

</asp:GridView>

</div>

</td>

</tr>

</table>

</td>

</tr>

</table>

</ItemTemplate>

</asp:Repeater>

Javscript:

function showChild(obj) {

var imgId = obj.id, grdId, grdObj, objImg = document.getElementById(imgId), imgChangeId, imgChangeObj, rowid;

if (obj.id.indexOf('Expand') > 0) {

grdId = obj.id.replace('imgExpand', 'Show');

rowid = obj.id.replace('imgExpand', 'ShowRow');

imgChangeId = obj.id.replace('imgExpand', 'imgCollapse');

imgChangeObj = document.getElementById(imgChangeId);

grdObj = document.getElementById(grdId);

rowobj=document.getElementById(rowid);

if (objImg != null) {

objImg.style.display = 'none'

}

if (grdObj != null) {

grdObj.style.display = 'block'

}

if (imgChangeObj != null) {

imgChangeObj.style.display = 'block';

}

if (rowobj != null) {

rowobj.style.display = 'block';

}

else {

grdId = obj.id.replace('imgCollapse', 'Show');

rowid = obj.id.replace('imgExpand', 'ShowRow');

imgChangeId = obj.id.replace('imgCollapse', 'imgExpand');

imgChangeObj = document.getElementById(imgChangeId);

grdObj = document.getElementById(grdId);

rowobj = document.getElementById(rowid);

if (grdObj != null) {

grdObj.style.display = 'none'

}

if (objImg != null) {

objImg.style.display = 'none'

}

if (imgChangeObj != null) {

imgChangeObj.style.display = 'block';

}

if (rowobj != null) {

rowobj.style.display = 'none';

}

</script>

public partial class MultiGrid : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

DataTable DTParent = new DataTable();

DataColumn dc1 = new DataColumn("ServiceId");

DataColumn dc2 = new DataColumn("ServiceName");

DataColumn dc3 = new DataColumn("ServiceAddress");

DTParent.Columns.Add(dc1);

DTParent.Columns.Add(dc2);

DTParent.Columns.Add(dc3);

DataRow DR = null;

for (int i = 0; i <>

{

DR = DTParent.NewRow();

DR[0] = i.ToString();

DR[1] = "bal";

DR[2] = "Address";

DTParent.Rows.Add(DR);

}

grdMulti.DataSource = DTParent;

grdMulti.DataBind();

}

protected void grdMulti_RowDataBound(object sender, RepeaterItemEventArgs e)

{

GridView GRDChild = (GridView)e.Item.FindControl("grdChild");

if (GRDChild != null)

{

DataTable DTChild = new DataTable();

DataColumn dc1 = new DataColumn("ServiceId");

DataColumn dc2 = new DataColumn("ServiceName");

DataColumn dc3 = new DataColumn("ServiceAddress");

DTChild.Columns.Add(dc1);

DTChild.Columns.Add(dc2);

DTChild.Columns.Add(dc3);

DataRow DR = null;

for (int i = 0; i <>

{

DR = DTChild.NewRow();

DR[0] = i.ToString();

DR[1] = "bal";

DR[2] = "Address";

DTChild.Rows.Add(DR);

}

GRDChild.DataSource = DTChild;

GRDChild.DataBind();

}

attachEvent& detachEvent using Javascript

2009-07-10T05:05:00.000-07:00

attachEvent& detachEvent

If you want to add dynamically event for the given control..have to use attach event

At the same removing have to use detach event.

Example:

<html>

<body>

<button id="myButton">Button</button>

<button onclick="function3();">Apply an event handler "Button"</button>

<button onclick="function2();">Detach</button>

function function3() {

document.all.myButton.attachEvent("onclick", function1)

}

function function1() {

document.bgColor = 'red';

}

function function2() {

document.bgColor = 'white';

document.all.myButton.detachEvent('onclick', function1);

}

</script>

</body>

</html>

Javascript Libraries

2009-07-09T08:18:00.001-07:00

Javascript Libraries

Shared via AddThis

Tip of the day

2009-07-08T08:11:00.000-07:00

Calling classes with out Instance

1) Creating static objects.

2) Making the modifier as a public in the base class method. then inherit in to the derived class. after call that method directly.

3) After inheriting base class to derived class. using base key we can get the all the methods.

Example.

All programmers knows the first option. let me explain another two scenoria with the appropriate example.

public class classA

{

public classA()

{

}

public string A()

{

return "s";

}

public class classB: classA

{

public string callWithoutInstance()

{

//Inherite the base class then directly call the public method

return A();

}

public string callWithoutInstanceBase()

{

//Inherite the base class then call the public method through base class.

return base.A();

}

Encapsulation

2009-07-08T06:01:00.000-07:00

Definition:

It's one of the basic concept in the object oriented software development. Wrapping up of a data in to a single unit is called encapsulation. It's basically hiding the objects.

Example:

Class

Polymorphism

2009-07-08T05:48:00.000-07:00

Definition:

Polymorphism is a Greek word, it means more than one form in a single unit. it's one of the basic concepts in the object oriented programming language. specifically it allow variable to refer more than one objects.

Virtual methods allows to express the polymorphism concept.

They are two types of polymorphism. The types are as follows.

1) Compile time polymorphism

2) Run time polymorphism

Compile time polymorphism

Define:

Same member signature different type of arguments. it will decide the member in the compile time itself

Example:

1)Function overloading.

2)operator overloading.

Runtime Polymorphism.

This will decide the method at runtime.

Example:

Inheritance

Virtual polymorphism

Copy Constructor

2009-07-07T04:51:00.000-07:00

Define:

Constructor will initialize only one at a time while coping the objects. New instance will not create. it will refer the existing class.

Copy constructor will not provide c# directly. But we can copy the objects using methods.

let me explain further with example.

public string var1 = string.Empty;

public string var2 = string.Empty;

//Copy Constructor

public CopyConstructor(CopyConstructor cpyCons)

{

var1 = cpyCons.var1;

var2 = cpyCons.var2;

}

//Instance of constructor

public CopyConstructor()

{

this.var1 = "s";

this.var2 = "s1";

}

CopyConstructor ss = new CopyConstructor();

CopyConstructor ss1 = new CopyConstructor(ss); //Coping the class using copy constructor.

RegEx.Split vs. String.Split

2009-07-07T03:11:00.000-07:00

String.split has some limitations in the split. but in the Regex.split will split duplicate delimeter.

The delimeter such as ||, ~~ and ::

string[] output  = null;  string inputSentence = "I am a developer|| I work on .Net || " +     "The latest framework available is 3.5";  //the following line will not work

output = inputSentence .Split("||".ToCharArray());

//use RegEx Split instead

output =  System.Text.RegularExpressions.Regex.Split(inputSentence, System.Text.RegularExpressions.Regex.Escape("||"));

Static Constructor in C#

2009-07-07T02:32:00.000-07:00

Constructor:

Object will be created when it is declared or dynamically constructed on the heap through new key word

Static Constructor:

1) Static constructor initialize only one at a time.

2) No parameter for the method.

3) Access modifier are not allowed for the static constrcutor.

4) Only static datamember will be used in the static member.

Better Sound in Framework 3.0

2009-07-01T05:50:00.001-07:00

In previous version we have system.media namespace. it nice to see this in frame work 2.0.

Using this namespace can play wav files. At a time can run only one file in the media player.

But we can't mix multiple files.

But now in frame work 3.0 come with new namespace for running the sound files. The new name space is system.media.SoundPlayer. In this we will run all the media extension like .wav,.mp3..

also simultaneously can run the files.

Inheritance using javascript.

2009-07-01T05:15:00.000-07:00

After digging little inside in the prototype object. i have found can achieve inheritance. Really its nice to see the code in javascript. i will write some sample code. try to use your projects also.. In future am trying to implement javascript with the custom objects and methods. hope in future will see nice coding with javascript also.

Example

function Base()

{

this.a = "Bala";

this.b = "Bala1";

}

function Derive()

{

this.a = "Bala2";

}

function ShowAll()

{

Derive.prototype = new Base();

var show = new Derive();

alert(show.a);

alert(show.b);

}

Output

Bala2

Bala1

String Split for new line in C#

2009-07-01T03:42:00.001-07:00

Today one of my friend faced problem in sorting. Spliting the new line('\r\n')

in the given text.

This is will be very use full for beginners.

Example:

string[] strSplit=new string[1];

strSplit[0]="\r\n";

string[] strarrayemail = txtEmail.Text.Split(strSplit,StringSplitOptions.RemoveEmptyEntries);

Array.Sort(strarrayemail);

txtEmail.Text =string.Empty;

foreach (string str in strarrayemail)

{

txtEmail.Text += str + "\r\n";

}

Protype objects using Javascript

2009-06-30T03:06:00.000-07:00

I have come across some aritcle for javascript. just thought of sharing this to everyone.so that am writing this in my blog.

let me explain my faurouite Prototype objects in the javascript. If you want to write libraries and learn advance in javascript. please try to learn prototype objects. It will be very use full.

Protytype objects.

Prototype is the keyword, Using this, we can add the custom properties and methods. Let me go through in detail.

Let me explain about custom properties in prototype objects.

function circle()

{

}

circle.prototype.pi="3.14";

This PI property is common for all the instances of the methods.

Custom Methods:

function ReverseBack()

{

for(i=this.length-1;i<=0;i--)

{

document.write(this.charAt(i));

}

String.Protype.writeBack=ReverseBack();

var message1="Bala";

var message2="alaB";

message1.writeBack();

message2.writeBack();

Output:

alaB;

Bala;

Disabling the Drag for Source Object

2009-06-30T01:44:00.000-07:00

Take this scenario, I have the table, in that having list of names, As per business logic some names should not allow the drag and drop functionality.

For that have to use set_cancel method. According to the condition it will not allow the drag and drop.

Example

ddb=new $Ig.DragDropBehaviour();

ddb.get_events().addDragStartHandler(DragStartHandler);

function DragStartHandler(sender, args)

{

args.set_cancel(true);

return;

}

Javascript Best Practices 6

2009-06-29T09:18:00.000-07:00

Reduce Globals

Try to avoid the global variable in the javascirpt code. Instead of that use the method objects.

var name = 'Jeffrey';
var lastName = 'Way';

function doSomething() {...}

Better way of writing the code.

var DudeNameSpace =

{

name :'Bala',

lastname:'Subramaniyam',

doSumething : function()

{

//do something

}

Drag & Drop Events-Infragistics

2009-06-29T09:14:00.000-07:00

1) addDragMoveHandler--- it will work, While moving the jobs from origin to destinaton origin.

2) addDragStartHandler-- When starting of drag will work., In this we can cancel the event using args.set_cancel(true);

3) addDragEndHandler--- it will work, After drop handler event fired,

4) addDragLeaveHandler--- it will work,after move out from the source block,

5) addDragCancelHandler--- it will work, After dragging not dropping to destination.

6) _removeHandler --It will remove only specified event handler.

7) clearHandler--It will clear all the event handler.

Validation Drag & Drop Infragisitics.

2009-06-29T08:54:00.000-07:00

We are facing one problem in the Current project, The issue is dragging the jobs from source and droping to destination.

In the destination am doing validation, if the validation has fails. We should not drop the jobs and it should go back to the destination automatically. Still i didnt found the solution. Even had a discussion with the infragistics. hopefully will get the solution soon.

For the above i have found the alternate solution.

I am using the copy and paste method for dragging the jobs.

If the validation fails in the destionation. i will not drop the destionation. so no need to go back the source. Already will have to data in the source. Because we are using the copy and paste method.

Example

Sys.Application.add_load(appLoaded);

function appLoaded(){

var ddb = new $IG.DragDropBehavior();

var list = $get("imageList");

var count = list.childNodes.length;

var child;

for (var i = 0; i <>

child = list.childNodes[i];

if (child.getAttribute) {

ddb.addSourceElement(child);

}

ddb.addTargetElement($get("cartAreaDiv"), true);

ddb.get_events().addDropHandler(dropHandler);

}

function dropHandler(sender, args){

var srcItem = args.get_manager().get_source().element;

var target = $get("cartAreaDiv");

//debugger;

if (srcItem.id == "CD"){

alert("You can't add a CD!"); Validatiion got failed.

}

else{

target.appendChild(srcItem);

}

Drag & Drop Basics-Infragistics

2009-06-29T08:43:00.000-07:00

Let me discuss some of the basic things about the Infragistics frame work. We have two type of drag and drop in the Infragistics.

1)Copy and paste. (Source will not delete, it will append to the destination)

2)Cut and paste. (Source will delete, it will not append to the destination)

If you want to enable the 1st one have to include the below code.

var ddb = new $IG.DragDropBehavior();

And include below code to enable the 2nd one.

var ddb = new $IG.DragDropBehavior();

var date = $get("ctl00_ContentPlaceHolder1_lblDate");

var wcgId = $get("ctl00_ContentPlaceHolder1_wcg_id");

Javascript Best Practices 5

2009-06-24T01:35:00.000-07:00

Eval = Bad

Eval is the function, it will execute the string in to script code.

It will run through javascript compiler. So that it will reduce the performance of the code

Substantially.

for better code dont use Eval..

Javascript Best Practices 4

2009-06-24T00:24:00.000-07:00

Use Always === operator, instead of ==

The issue of this operator (==) is, if the variable are different types it does not compare. It's end up with javascript error.

But in this operator( === ) variable will be converted in to objects. and it will compare.

1)!=

2) ==

Bettor Coding use below opertor instead of above.

1)!==

2)===

Javascript Best Practices 3

2009-06-23T09:15:00.000-07:00

One interesting thing have faced today in the javascript. I was tried nearly two hour to enabling the focus for html tags (like table, tr, th). It does not work out.

After concluded we can give focus only for controls like textbox, button. Anchor tag..

So that I have used Anchor tag in my task.

Note:Hidden field can't give focus.

Custom ProgressBar using Javascript

2009-06-23T02:45:00.000-07:00

Step 1:

Create below div tags in the aspx page.

</div>

Step 2:

Create stylesheet with below classes.

div.modalProgressOuter

{

background-color:White;

filter:alpha(opacity=40);

opacity:0.4;

position:absolute;

display:none;

}

div.modalProgressIn

{

vertical-align:middle;

}

Step 3:

Call the below javascript through control, i mean when you click on submit button..

function showProgress() {

var objModalProgress = document.getElementById("modalOut");

var objModalIn = document.getElementById("modalIn");

if (objModalProgress != null) {

objModalIn.style.marginLeft = parseInt(document.body.offsetWidth) / 2;

objModalIn.style.marginTop = parseInt(document.body.offsetHeight) / 2;

objModalProgress.style.height = document.body.offsetHeight;

objModalProgress.style.width = document.body.offsetWidth;

objModalProgress.style.display = "block";

objModalProgress.style.left = 10;

objModalProgress.style.top = 25;

}

Javascript Best Practices 2

2009-06-23T02:36:00.000-07:00

Always, Always Use Semicolons.

If you not use ;(semicolon) in the code, it's very difficult to find the error.

So please try to use everystatement with semi colon.

var someItem = 'some string'
function doSomething() {
return 'something'
}

Better

var someItem = 'some string';
function doSomething() {
return 'something';
}

Javascript Best Practices 1

2009-06-23T02:27:00.000-07:00

Remove "Language" in the Script tag

we have used years ago, Because we unable to find that language.

Now its deprecated, so leave it out.

Itextsharp

2009-06-23T01:51:00.001-07:00

Itextsharp

I have come across this from one of my friend, I just thought of sharing with everyone. i am writing in my blog.

This is opensource library, Which will create the PDF on the fly. Basically its taken from java library. now purely written in the C#.NET

Everyone can use this library with .net framework 1.1 and 2.O

You can download the dll in the given URL

http://sourceforge.net/projects/itextsharp/

C# 4.0 -Optional Parameters

2009-06-22T02:27:00.000-07:00

I was really excited, when i have seen upcoming feature in c# 4.0, After come across some article, This feature will be very useful.

Optional Parameters

Let’s say I have a class Employee and I provide few overloads of the constructor to enable making certain parameters as optional as follows:

Older Method

public class Employee
{
public string FirstName { get; set; }
public string LastName { get; set; }
public string Qualification { get; set; }
public string MiddleName { get; set; }

public Employee(string firstName, string lastName)
{
FirstName= firstName;
LastName= lastName;
Qualification= "N/A";
MiddleName= string.Empty;
}
public Employee(string firstName, string lastName, string qualification)
{
FirstName= firstName;
LastName= lastName;
Qualification= qualification;
MiddleName= string.Empty;

}
public Employee(string firstName, string lastName, string qualification,
string middleName)
{
FirstName= firstName;
LastName= lastName;
Qualification= qualification;
MiddleName= middleName
}
}

Newer Method

public Employee(string firstName, string lastName,
string qualification = "N/A", string middleName = "")
{
FirstName= firstName;
LastName= lastName;
Qualification= qualification;
MiddleName = middleName;
}

Drag & Drop In Infragistics New Framework

2009-06-22T01:44:00.000-07:00

Infragistics(2009.1), In the new version drag & drop features implemented. We can implement this feature in the html element.

Note:This is very good support for DIV element in the HTML. Dont use other thin div. when you add more functionality in the page, it may give problem when you use other than DIV.

Make sure Div elment in the outermost..

Example:

Step 1:

Download original version from Infragistics 2008 or 2009

Step 2:

Download below three files from Infragistics installed folder.

1)igDragDrop.js

2)5_igObjects.js

3)igAnimation.js

Maintain same order, when you add the Above javascript in the page.

Step 3:

Add the below script in the page, which you are going to implement the drag & drop feature.This is the script will allow the drag and drop feature.

if (typeof (Sys) !== 'undefined')

{

Sys.Application.notifyScriptLoaded();

Sys.Application.add_load(appLoaded);

}

</script>

Step 4:

In the below script have two method which will enable the drag & drop for html elements.Also am adding the script in the addsource element and adddrag element.

1)addSourceElement

2)addTargetElement

It will deside the from and destination of the elements.

function appLoaded() {

ddb = new $IG.DragDropBehavior();

ddb.set_defaultDropAction($IG.DragDropAction.Insert);

ddb.set_dragDropMode($IG.DragDropEffects.Move);

var list = $get("DragUnassign");

var count = list.childNodes.length;

for (var i = 0; i <>

var child = list.childNodes[i];

if (child.getAttribute)

ddb.addSourceElement(child);

}

for (var k in techIds) {

ddb.addTargetElement($get(techIds[k]), true); //Techids nothing but a div //element of the id

var jobs = $get(techIds[k]);

if (jobs != null) {

if (jobs.childNodes != null) {

var jobCount = jobs.childNodes.length;

for (var x = 0; x <>

var job = jobs.childNodes[x];

if (job.getAttribute)

ddb.addSourceElement(job);

}

ddb.addTargetElement($get("DragUnassign"), true);

ddb.get_events().addDropHandler(dropHandler);

var autoComplete = $find('Auto');

}

Step 5:

In this method "$IG.DragDropBehavior()" we have method called drop Handler.

This is method it will enable the events.

Note:In the present version, It cannot write a server side method for the drag & drop feature.

Step 6:

This is the method will call the webservice.

function dropHandler(sender, args)

{

var manager = args.get_manager();

if (args.get_manager()._dragging == true) {

var progressEnable = false;

var target = manager.get_targetElement().id.replace("tech", "");

techId = target;

var obtblid = techId.replace("tech", "parent");

var sourceElement = manager.get_source().element.id;

var sourceObject = manager.get_source().element.offsetParent.id;

////////////////////This is for Dragging & droping Jobs from Unassigned to Technician////////////

if ((sourceObject == "DragUnassign") && (manager.get_targetElement().id.indexOf("tech") != -1)) {

progressEnable = true;

LTDWebApp.WebClient.WebPages.Dispatcher.TechDetails.AssignJob(target, sourceElement,drcCommitdate, "ADD", onSuccessDrag, onFailureDrag);

}

//////////////////// End for Dragging Jobs from Unassigned to Technician////////////////////////

////////////////////This is for Dragging & droping Jobs from Technician to Technician////////////

else if ((sourceObject.indexOf("tech") != -1) && (manager.get_targetElement().id.indexOf("tech") != -1)) {

progressEnable = true;

LTDWebApp.WebClient.WebPages.Dispatcher.TechDetails.AssignJob(target, sourceElement,drcCommitdate, "UPDATE", onSuccessDrag, onFailureDrag);

}

////////////////////End for Dragging & droping Jobs from Technician to Technician////////////

else

{

////////////////////This is for Dragging & droping Jobs from Technician to Unassigned ////////////

progressEnable = true;

LTDWebApp.WebClient.WebPages.Dispatcher.TechDetails.UnassignJob(sourceElement);

//LTDWebApp.WebClient.WebPages.Dispatcher.TechDetails.GetUnassignedJobs(wcgId, drcCommitdate, onSuccessDragUnassign, onFailureDrag);

////////////////////End for Dragging & droping Jobs from Technician to Unassigned////////////

}

if (progressEnable == true)

{

showProgress(techId.replace("tech", "")); ////////Showing the Progress Bar

}

Step 7:

function onSuccessDrag(Result)

{

var ddb = new $IG.DragDropBehavior();

ddb.set_defaultDropAction($IG.DragDropAction.Insert);

ddb.set_dragDropMode($IG.DragDropEffects.Move);

var obtblid = "parent"+techId;

var objTbl = document.getElementById(obtblid);

var objTbody = objTbl.getElementsByTagName("tbody")[0];

objTbl.setAttribute("cellpadding", "0");

objTbl.setAttribute("cellspacing", "0");

objTbl.setAttribute("frame", "box");

objTbl.setAttribute("className", "tblAssignParenttech");

var preRows = objTbody.rows.length;

for (j = 0; j <>

{

if (j != 0)

{

objTbody.removeChild(objTbody.rows[j]);

}

var objRow = document.createElement("tr");

var objTd = document.createElement("td");

var objDiv = document.createElement("div");

objRow.setAttribute("className", "tblAssignParenttechRow");

objDiv.setAttribute("className", "tblscrollAssign");

objDiv.setAttribute("id", "tech"+techId);

var len = Result.length;

for (i = 0; i <>

objSplit = Result[i].split("||");

jobId = objSplit[0];

JobInterval = objSplit[1];

JobMON = objSplit[2];

var objchildjobDiv = document.createElement("div");

objchildjobDiv.setAttribute("id", jobId);

var objchildTbl = document.createElement("table");

var objchildTblBody = document.createElement("tbody");

objchildTbl.setAttribute("border", "0");

objchildTbl.setAttribute("width", "100%");

objchildTbl.setAttribute("cellpadding", "3");

objchildTbl.setAttribute("cellspacing", "1");

objchildTbl.setAttribute("className", "liBorder");

var objchildRow = document.createElement("tr");

var objchildTd = document.createElement("td");

objchildTd.setAttribute("className", "borderstyle");

var objchildTd1 = document.createElement("td");

objchildTd.innerText = JobInterval;

objchildTd1.innerText = JobMON;

objchildRow.appendChild(objchildTd);

objchildRow.setAttribute("ondblclick", "javscript:showJob(this);");

objchildRow.appendChild(objchildTd1);

objchildTblBody.appendChild(objchildRow);

objchildTbl.appendChild(objchildTblBody);

objchildjobDiv.appendChild(objchildTbl);

objDiv.appendChild(objchildjobDiv);

ddb.addSourceElement(objchildjobDiv);

}

objTd.appendChild(objDiv);

objRow.appendChild(objTd);

objTbody.appendChild(objRow);

ddb.set_defaultDropAction($IG.DragDropAction.Insert);

ddb.addTargetElement($get("DragUnassign"), true);

ddb.addTargetElement($get("tech" + techId), true);

ddb.get_events().addDropHandler(dropHandler);

hidemodalProgress();

}

Step 8:

Once the request is succeed with above method. I am generating the client side table with array data using javascript.

function onSuccessDrag(Result)

{

var ddb = new $IG.DragDropBehavior();

ddb.set_defaultDropAction($IG.DragDropAction.Insert);

ddb.set_dragDropMode($IG.DragDropEffects.Move);

var obtblid = "parent"+techId;

var objTbl = document.getElementById(obtblid);

var objTbody = objTbl.getElementsByTagName("tbody")[0];

objTbl.setAttribute("cellpadding", "0");

objTbl.setAttribute("cellspacing", "0");

objTbl.setAttribute("frame", "box");

objTbl.setAttribute("className", "tblAssignParenttech");

var preRows = objTbody.rows.length;

for (j = 0; j <>

{

if (j != 0)

{

objTbody.removeChild(objTbody.rows[j]);

}

var objRow = document.createElement("tr");

var objTd = document.createElement("td");

var objDiv = document.createElement("div");

objRow.setAttribute("className", "tblAssignParenttechRow");

objDiv.setAttribute("className", "tblscrollAssign");

objDiv.setAttribute("id", "tech"+techId);

var len = Result.length;

for (i = 0; i <>

objSplit = Result[i].split("||");

jobId = objSplit[0];

JobInterval = objSplit[1];

JobMON = objSplit[2];

var objchildjobDiv = document.createElement("div");

objchildjobDiv.setAttribute("id", jobId);

var objchildTbl = document.createElement("table");

var objchildTblBody = document.createElement("tbody");

objchildTbl.setAttribute("border", "0");

objchildTbl.setAttribute("width", "100%");

objchildTbl.setAttribute("cellpadding", "3");

objchildTbl.setAttribute("cellspacing", "1");

objchildTbl.setAttribute("className", "liBorder");

var objchildRow = document.createElement("tr");

var objchildTd = document.createElement("td");

objchildTd.setAttribute("className", "borderstyle");

var objchildTd1 = document.createElement("td");

objchildTd.innerText = JobInterval;

objchildTd1.innerText = JobMON;

objchildRow.appendChild(objchildTd);

objchildRow.setAttribute("ondblclick", "javscript:showJob(this);");

objchildRow.appendChild(objchildTd1);

objchildTblBody.appendChild(objchildRow);

objchildTbl.appendChild(objchildTblBody);

objchildjobDiv.appendChild(objchildTbl);

objDiv.appendChild(objchildjobDiv);

ddb.addSourceElement(objchildjobDiv);

}

objTd.appendChild(objDiv);

objRow.appendChild(objTd);

objTbody.appendChild(objRow);

ddb.set_defaultDropAction($IG.DragDropAction.Insert);

ddb.addTargetElement($get("DragUnassign"), true);

ddb.addTargetElement($get("tech" + techId), true);

ddb.get_events().addDropHandler(dropHandler);

hidemodalProgress();

}

ResizableControlExtender in Ajax

2009-05-19T00:17:00.000-07:00

Asp.Net Ajax offers a ResizableControlExtender to resize the any element in the webpages. Please follow the below steps to create the Resizablecontrolextender for the panel.

Step 1:
Create Ajax enabled website.

Step 2:

Now go to the solution explorer and add the Ajaxcontroltoolkit.dll in the root directory.

Step 3:

Also add the Ajaxcontroltoolkit.dll in the toolbox to get the control.

Step 4:

Create CSS for HandleCssClass and ResizableCssClass for the control attribute.

<style type="text/css">
.handle
{
width:10px;
height:10px;
background-color:#aaccee;
}
.resizing
{
padding:0px;
border-style:solid;
border-width:1px;
border-color:#aaccee;
cursor:se-resize;
}
</style>

Step 4:

Create one panel with the some paragraph document.

<asp:Panel ID="Panel1" runat="server" Style="width: 300px; height: 200px;">
<asp:Label ID="image1" runat="server" Text="ASP.NET AJAX offers you Resizable Extender Control. ResizableControl is an extender that attaches to any element on a web page and allows the user to resize that control with a handle that attaches to lower-right corner of the control. The resize handle lets the user resize the element as if it were a window.">
</asp:Label>
</asp:Panel>

Step 5:

Create the ResizableControlExtender and link the panel.

<cc1:resizablecontrolextender ID="ResizableControlExtender1"
runat="server" TargetControlID="Panel1" HandleCssClass="handle" ResizableCssClass="resizing" MaximumHeight="400" MaximumWidth="500"
MinimumHeight="100" MinimumWidth="100" HandleOffsetX="5" HandleOffsetY="5" />

calling WCF Service method from javascript

2009-05-18T03:56:00.000-07:00

here am speaking about the how wcf service method will call in the clientside using javascript. please find the below examples.

Before starting the code please select the template called Ajax enabled wcf service.

then call the method in the javascript.

ASPX with javascript.

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title></title>
<script language="javascript" type="text/javascript">
function getValue()
{
AjaxWCF.DoWork(onSucess,onFailure)
}
function onSucess(result)
{
alert(result);
}
function onFailure(result)
{
alert(result);
}
</script>
</head>
<body onload="getValue();">
<form id="form1" runat="server">
<asp:ScriptManager ID="script" runat="server">
<Services>
<asp:ServiceReference Path="~/AjaxWCF.svc" />
</Services>
</asp:ScriptManager>
</form>
</body>
</html>

AjaxWCF.svc File

using System;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Activation;
using System.ServiceModel.Web;

namespace Xmlhttp
{
[ServiceContract(Namespace = "")]
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class AjaxWCF
{
// Add [WebGet] attribute to use HTTP GET
[OperationContract]
public string DoWork()
{
// Add your operation implementation here
return "Hi bala";
}
// Add more operations here and mark them with [OperationContract]
}
}

Access a control on the Content Page from a MasterPage using JavaScript

2009-05-18T03:27:00.000-07:00

If you have a control on the control page, which has to be accessed in the master page using JavaScript, then here how to do so.

on the content page. create a text box has given below.

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:Panel ID="panelContent" GroupingText="ContentPage Controls" runat="server">
<asp:TextBox ID="txtContent" runat="server"></asp:TextBox>
</asp:Panel>
</asp:Content>

Now access and control the page text box "txtContent" from the master pages.

<head runat="server">
<title></title>
<script type="text/javascript">
function accessControlContentPage() {
var txtCont = document.getElementById('<%= Page.Master.FindControl("ContentPlaceHolder1").FindControl("txtContent").ClientID %>');
txtCont.value = "I got populated using Master Page";
}
</script>
<asp:ContentPlaceHolder id="head" runat="server">
</asp:ContentPlaceHolder>
</head>

Calling Webservice through Ajax with javascript

2009-05-14T03:13:00.000-07:00

In modern way of calling the web service through the JavaScript.

Aspx page

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>

<script type="text/javascript">
function OnLookup()
{
var stb = document.getElementById("txt1");
Xmlhttp.call.HelloWorld1(stb.value, OnLookupComplete);
}
function OnLookupComplete(result)
{
var res = document.getElementById("txtHint");
res.innerHTML = "<b>" + result + "</b>";
}
</script>

</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="script" runat="server">
<Services>
<asp:ServiceReference Path="~/call.asmx" />
</Services>
</asp:ScriptManager>
First Name:<input type="text" id="txt1" onkeyup="OnLookup();">
<span id="txtHint"></span>
</div>
</form>
</body>
</html>

webservice
namespace Xmlhttp
{
///

/// Summary description for call
///

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
[System.Web.Script.Services.ScriptService]
public class call : System.Web.Services.WebService
{
[WebMethod]
public string HelloWorld()
{
string value = "1";// HttpContext.Current.Request.QueryString["value"];
Dictionary objDictionary = new Dictionary();
if (HttpRuntime.Cache["out"] != null)
{
objDictionary = (Dictionary)HttpRuntime.Cache["out"];
if (!objDictionary.ContainsKey(value))
{
objDictionary.Add(value, value + "out");
}
}
else
{
objDictionary.Add(value, value + "out");
}
HttpRuntime.Cache["out"] = objDictionary;
return objDictionary[value];
}
[WebMethod]
public string HelloWorld1(string value)
{
return value;
}
}
}

Accessing webservice from javascript using XML HTTp Activex

2009-05-14T02:54:00.000-07:00

Define:

XML http is a active X object to enable the browser to sending the request and receiving the response asynchronously.

Example:

Aspx Section

<html>
<head>
<script type="text/javascript">
var xmlHttp=null;
function showHint(str)
{
if (str.length==0)
{
document.getElementById("txtHint").innerHTML="";
return;
}
try
{// Firefox, Opera 8.0+, Safari, IE7
xmlHttp=new XMLHttpRequest();
}
catch(e)
{// Old IE
try
{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
catch(e)
{
alert ("Your browser does not support XMLHTTP!");
return;
}
}
var url = "http://localhost:2735/call.asmx?op=HelloWorld";
//var getValue = document.getElementById("txt1");
//url = url + "&value='" + getValue.value + "'";

xmlHttp.onreadystatechange = output;
xmlHttp.open("GET",url,true);
xmlHttp.send();
function output() {
if (xmlHttp.readyState == 4)
{
xmlHttp.open("POST", "http://localhost:2735/call.asmx/HelloWorld", false);
xmlHttp.send();
document.getElementById("txtHint").innerHTML = xmlHttp.responseText;
}
}
}
</script>
</head>
<body>
<form>
First Name:
<input type="text" id="txt1"
onkeyup="showHint(this.value)">
</form><p>Suggestions: <span id="txtHint"></span></p> </body>
</html>

Webservice Section

namespace Xmlhttp
{
///

/// Summary description for call
///

Filtering using Linq

2009-04-15T06:07:00.000-07:00

Filtering datarow using Linq.

object[] ArrDr = DR.ItemArray;

IList RowValue = (from filter in ArrDr where filter.ToString() != "" where filter.ToString() != " " select filter).Distinct().ToList();

Calling javscript method in different frames.

2009-04-15T05:16:00.000-07:00

Step1:

Create one html page with following frames with frameset.

<frameset cols="30%,70%">
<frame src="testFrame.aspx" name="foody"/>
<frame src="Frame1.aspx" name="goody"/>
</frameset>

step 2:

Create one javascript method in testFrame.aspx, which it has been included in frame 1.

Javascript method.

function getValueFrame1()
{
alert("hi");
}

step 3:

call that javacript method in the second frame of page.

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>

</div>
</form>
<script language="javascript">
parent.foody.getValue();
</script>
</body>
</html>

Note:foody is frame name

Showing Intelligence for JavaScript methods in different Files.

2009-04-13T03:10:00.000-07:00

Showing Intelligence for JavaScript methods in different Files.
I have created Jscript1.js with following methods with out definition.

I am referring the jscript1.js file in to script2.js using Reference Attribute. After adding the reference am getting intelligence for the jscript1.js file methods.

Generating javascript Id through C# (Instead of using control.clientID)

2009-03-24T05:12:00.000-07:00

protected void Page_PreRender(object sender, EventArgs e)
{
Page.ClientScript.RegisterClientScriptBlock(this.GetType(),string.Empty,string.Format("{0}"), string.Format("var gridUniqueID = '{0}'; ", uwgDailyView.UniqueID))
}

fromdate always less than todate validation using javascript

2009-03-24T03:38:00.000-07:00

Getting Start week date for the given date

2009-03-24T03:13:00.000-07:00

function commonformat(objDate)
{
var strdate=objDate.split("/");
var yer=strdate[2];
var da=strdate[0];
var mon=strdate[1];
var cdat=new Date(yer,mon,da);
var countDay=cdat.getDay();
if(countDay!="0")
{
cdat.setDate(cdat.getDate()-countDay);
}
return cdat;
}

Finding Eventtop and EventLeft position Using javascript

2009-03-24T02:33:00.000-07:00

var evnt=window.event;
var y =evnt.clientY + document.body.scrollTop + document.body.parentNode.scrollTop;
var x =evnt.clientX + document.body.scrollLeft + document.body.parentNode.scrollLeft;

You have to apply this top and left position value to style attribute of the control.

Dependency Caching Using Oracle 11g

2009-03-18T00:20:00.000-07:00

Dependency Caching.

It is nothing but a one of the caching mechanism for interacting with the Database.

If any data changes happen in the database,

it will find out and full out the data only on that time. It wont go every time to

the database. In this am going to explain how to do dependency caching using Oracle

11g.Also this option not avilable earlier version of oracle 11g.

Example:

In oracle11 g, there is a method called OracleDependency using this have to achieve the Oracle dependency caching.

public DataSet GetTechnicianDrpdwnval()
{
try
{
DataSet DSTechSumDrp = new DataSet();
ltdConn = new OracleConnection();
ltdConn.ConnectionString = ltdConnString;
ltdCommand = new OracleCommand("USP_GetTechSumDropdown", ltdConn);
ltdCommand.CommandType = CommandType.StoredProcedure;
ltdCommand.Parameters.Add(new OracleParameter("Drp_Primaryduty", OracleDbType.RefCursor)).Direction = ParameterDirection.Output;
ltdCommand.Parameters.Add(new OracleParameter("Drp_TypeOfWork", OracleDbType.RefCursor)).Direction = ParameterDirection.Output;
ltdCommand.Parameters.Add(new OracleParameter("Drp_DispatchCenter", OracleDbType.RefCursor)).Direction = ParameterDirection.Output;
///////////////////////////////Oracle Dependency Caching////////////////////////////////
objOracleDependency = new OracleDependency(ltdCommand);
ltdCommand.Notification.IsNotifiedOnce = false;
objOracleDependency.OnChange += new OnChangeEventHandler(ObjTechDrpDwnval);
///////////////////////////////End/////////////////////////////////////////////////////
ltdDataAdapter = new OracleDataAdapter(ltdCommand);
ltdDataAdapter.Fill(DSTechSumDrp);
return DSTechSumDrp;
}
catch (Exception)
{
throw;
}

public static void OnDatabaseNotificationForGetTechnicianDrpdwnval(object src, OracleNotificationEventArgs args)
{
// Here we have invalidate our cache object if result set changed in database.
InvalidateCache("WireCenter");
}

public static void InvalidateCache(String CacheName)
{
if (HttpRuntime.Cache[CacheName] != null)
{
HttpRuntime.Cache.Remove(CacheName);
}
}

Typed Dataset Using Asp.net 3.5

2009-01-08T23:22:00.000-08:00

Typed Dataset Using Asp.net 3.5

Before starting we will remember in Dotnet frame work 2.0. In this it will create only xsd and class file for that. But it will not create Adapters for retrieving dataset. We should use Sqldataadapter for getting the data. But in Asp.net 3.5 frame work it will create data adapter for that xsd. So we can get the typed dataset via adapter instead of getting from Sqldataadapter. See the step by step explanations with examples.

Step 1:

Create one employee database with table name called “contact” which has created for you. Open that database in server explorer of visual studio 2008. See picture A

Picture A

Step 2:

Create Contact.xsd file through add file option in project file. See picture B

Picture B

Step 3:

Drag and drop contact table in to the contact.xsd screen. After waiting few seconds it will create Contact.xsd file automatically. Now you can see in picture C

Picture C

Step 4

Writing few lines of code assigning this typed data values in gridview. See picture as well as the code to retrieve the typed dataset. Create one aspx page with gridview control. I am going to write the code in page load event for that page.

Example:

protected void Page_Load(object sender, EventArgs e)
{
ContactTableAdapters.ContactTableAdapter Dataadapt = new Dotnetspider.ContactTableAdapters.ContactTableAdapter();
grdlist.DataSource = Dataadapt.GetData();
grdlist.DataBind();
}

Note: ContactTableAdapter class will create automatically. This is the one main difference between frame work 2.0 and framework 3.5. But in 2.0 frame work will not create.

Happy Coding

By

Bala

Note:Images will update soon. Sorry for the inconvenience.

Using Filter Expressions with an SQL Data Source in ASP.NET VB 2008

2009-01-05T03:05:00.000-08:00

In Visual Studio 2008, we can filter the dataset in c# with out using sqlquery.

If you use sqldatasource in your project. we can filter the dataset in c# coding itself.

Example1

If (Session("FiltExp") <> Nothing) Then
SqlDataSource1.FilterExpression = Session("FiltExp").ToString()
End If

Example2

SqlDataSource1.FilterExpression = "city='" & DropDownList1.SelectedValue & "'"

Example3

SqlDataSource1.FilterExpression = "BirthDate > #" + dt + "#"
Session("FiltExp") = "BirthDate > #" + dt + "#"

Hidden Features in C#

2009-01-05T00:57:00.000-08:00

1) Using @ for variable that are keyword.

var @object = new object();
var @string = "";
var @if = IpsoFacto();

2) Aliased Generics.

using ASimpleName = Dictionary<string, Dictionary<string, List<string>>>;

Allows you to ASimpleName,instead of

Dictionary<string, Dictionary<string, List<string>>>;

Use it when you would use the same generic big long complex thing in a lot of places.

Accessing server side event using Ajax 3.5 with Visual Studio 2008

2009-01-01T22:52:00.000-08:00

Accessing server side event using Ajax 3.5 in visual studio 2008.

when we compare with earlier method,This may easy to write the code for developer.

step1 :

Include in your application system.web.extensions 3.5

Step 2:

In the script manager tag EnablePageMethods attribute make it true. it will help you to create method in the pagemethod class. Then only you can access the server event in the client side.

<asp:ScriptManager ID="ScriptManager1" EnablePageMethods="true" runat="server">
</asp:ScriptManager>

Step 3:

We should include the namespace over the server side method.[System.Web.Services.WebMethod].

Earlier we have used [Ajax.Ajaxmethod].

Example
[System.Web.Services.WebMethod]
public static string Message(string one,string two)
{
return one + two;
}

Step 4:
Client side. while calling the server side method. it will create two default methods. if it is succeed it will call OnGetMessageSuccess, and fails it will call OnGetMessageFailure.
Example

function GetCall()
{
PageMethods.Message("122","122",OnGetMessageSuccess, OnGetMessageFailure);
}
function OnGetMessageSuccess(result,userContext,methodName)
{
alert(result);
alert(userContext);
}
function OnGetMessageFailure(error,userContext,methodName)
{
alert(error.get_message());
}

Customizing "Start Page" in Visual Studio 2010

2009-01-01T22:06:00.000-08:00

In visual studio 2010 coming with new feature called “Start page” Customization.

This feature will be more helpful for the developers. Check the below images for your reference. Also see the comparison with visual studio 2008.

Comparision with visual studio 2008:

Step1:

Step2:

Step3:

Step4:

Windows Workflow Foundation

2008-10-30T22:02:00.000-07:00

Workflow:

Workflow is nothing but a Business Process also start with a need end with a fulfilled need.

now lets talk about Business Process.

Business Process.

Business process is a collection of activities.it will describe the start to end activity. The Business process is categrozied in to three types. The types are

1)Management Business process(Ex:Governence and Strategic Management)
2)Operation Business process(Ex:Manufactoring,Supply chain).
3)supporting Business Process(Ex:Accounting Recuriting).

Visual studio 2008 has a new style builder dialog

2008-10-14T05:24:00.000-07:00

Visual studio 2008 has a new style builder dialog. For creating new style sheet, viewing the style sheet with design.Please follow the below steps to create the style sheet throgh VS tools.
step1:

step2:

step3:

PartialUpdatePanel Using Dotnet Framework 2.0

2008-09-23T23:51:00.000-07:00

Contact:s.balasubramaniyam@gmail.com

Reading and writing file in Table using binary

2008-08-11T07:59:00.000-07:00

Just follow up my steps,so that you will get clear idea.

step 1:

Create table with the folowing column, The columns are content type, filename and filedata. if you want also create some additional columns.

for "filedata" column choose datatype called "image" in the datatype list.

Note:if you choose binary datatype instead of image. unable to insert large data in to the table.

writing file in to the table

step 2:

just convert your data file to binary format, After that do insert in to table.

step 3:

how to run exe file through javascript

2008-08-11T07:53:00.000-07:00

<html>
<head>
<script language="javascript" type="text/javascript">

function runApp()
{s
var shell = new ActiveXObject("WScript.shell");
shell.run("notepad.exe ", 1, true);
}
</script>
</head>

<body>
<input type="button" name="button1" value="Run Notepad" onClick="runApp()" />
</body>
</html>

Dropdown validation using Javascript

2008-07-07T22:34:00.000-07:00

The below code is for validating the dropdown when click on the submit button. I have described below step by step process.

Step 1:

function getcheckdrp()
{
var drp=document.getElementById("drpcheck");
if(drp=='[object]')
{
if(drp.selectedIndex==0)
{
alert("please select state");
return false;
}
}
}

step 2:

<asp:ListItem>----Select State----</asp:ListItem>
<asp:ListItem>Karnataka</asp:ListItem>
<asp:ListItem>Bangalore</asp:ListItem>
</asp:DropDownList>

<asp:Button ID="btncheckdrp" runat="server" />

step 3:

protected void Page_Load(object sender, EventArgs e)
{
btncheckdrp.Attributes.Add("onclick", "javascript:return getcheckdrp()");
}