The sample code?is on the most frequently asked query on "How to get the confirmation of Yes/No from a javascript pop up and display the value on the page using ASP.NET"?
  • Create a webpage main.aspx
  • Drag and drop a?hidden control and <asp:button> control on the web form.

Step 1. main.aspx.vb

Write the following code on page load event

Button1.Attributes.Add("onclick", "getMessage()")

Step 2.In main.aspx

Add the client side-script block

<SCRIPT language=javascript>
 function getMessage()
 {
 var ans;
 ans=window.confirm('Is it your confirmation.....?');
 //alert (ans);                      
 if (ans==true)
  {
    //alert('Yes');
    document.Form1.hdnbox.value='Yes';
   }
 else
 {
    //alert('No');
    document.Form1.hdnbox.value='No';}

 }
</SCRIPT>

Step 3. main.aspx.vb

To display the value of the value selected by the user in the pop up write the following code

Response.Write(Request.Form("hdnbox"))