The ScriptManager must appear before any controls that need it

Question

I have created a new ASP.NET Web Application, and after debugging i got Server Error

The control with ID \'WaitingPopup1\' requires a ScriptManager on

Answer 1

The script manager must be put onto the page before it is used. This would be directly on the page itself, or alternatively, if you are using them, on the Master Page.

The markup would be;