KaushaL.NET

I have seen posts today asking for Asynchronous Request to Server which will Query the Database for certain information.
Here, I am giving one example, which will send an Asynchronous Request to server for Checking the availablity of the UserName entered by the user against database.
Below is my WebPage:
<div>
<asp:Label ID=”Label1″ runat=”server” Text=”UserName:”></asp:Label>
<asp:TextBox ID=”TextBox1″ runat=”server”></asp:TextBox>
<asp:Button ID=”Button1″ runat=”server” [...]