Telerik RadWindow as modal popup

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Popup.aspx.cs" Inherits="TestProject.Popup" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>



    


    

    

        
        
        
        
    
      
    
     
      
     
      
  
    
    

Steps:-

• First copy and paste the above code in your aspx page.
• Then run the page.
• Then there is button name as Click.Click this button and you gate the follwing output.

Output: