you could test a LINQ query without pressing F5 in Visual Studio..

http://www.linqpad.net/

 the tool also includes all the samples from the book "C# 3.0 in a Nutshell" written by Joseph Albahari

One of the new controls in ASP.NET 3.5 is ListView. It resembles the GridView control, except that it displays data by using user-defined templates instead of row fields.

The ListView control supports the following features:

ü  Support for binding to data source controls such as SqlDataSource, LinqDataSource, and ObjectDataSource.

ü  Customizable appearance through user-defined templates and styles.

ü  Built-in sorting capabilities.

ü  Built-in update and delete capabilities.

ü  Built-in insert capabilities.

ü  Support for paging capabilities by using a DataPager control.

ü  Built-in item selection capabilities.

ü  Programmatic access to the ListView object model to dynamically set properties, handle events, and so on.

ü  Multiple key fields.

In Asp.Net ListBox, there are no events for Click action. The follwing code is useful in this regard..

Some times we need to call server side function from Javascript function.For example,callig a PoupWindow(with value from code behind) on HyperLink click. 

This must be implemented by creating a additional request to the web server and that’s the only way to invoke methods on the server. Page methods are used for this.

What is PageMethod?

A PageMethod is a public static method that is exposed in the code-behind of a page and can be called from the client script. PageMethods are annotated with [System.Web.Services.WebMethod] attribute.

The code is simple..

Server side function

[System.Web.Services.WebMethod] public static void Score(string ID, string name, string Role) {

         try {

                //Some data manipulations 

                  return finalScore ; 

              }

         catch (Exception ex) { 

               //Response.Write(ex.ToString());

                                  } 

            } 

//Client Side function 

function score()

              {               

                  PageMethods.Score(txtID.value,txtName.value,txtRole.value);            

               } 

<asp:HyperLink ID="btn_Test" runat="server" Text="Calculate" OnClientClick="javascript:return score();"/>