Asp. How to eject a dialog box when using Ajax in net

When you add an AJAX control to a asp.net page, you can't pull out the window solution:
ASP.NET2.0 Ajax uses the new ScriptManager class to manage, but not the original ClientScriptManager class, so use
<script>alert (' Hint: Product add success! ') </script> and
This. Clientscript.registerclientscriptblock (this. GetType (), "name", "<script>alert" (' Hint: Product added success! '); </script> ", true);
Page.ClientScript.RegisterClientScriptBlock (this. GetType (), "name", "<script>alert (' Hint: Product add success ');</script>", true);
None of these methods are valid.

You can write code implementations in the following ways

Scriptmanager.registerstartupscript (UpdatePanel1, Updatepanel1.gettype (), "", "alert (' Hint: Product added successfully.") '); if (Confirm (') continue adding. Cancel go to Product Management page ') {alert (' This page continues to add ')}else{window.open (' productmanage.aspx ', ' _self ');} ", true);