How to detect page refresh in .net

Question

I have a Button_click event. While refreshing the page the previous Postback event is triggering again. How do I identify the page refresh event to

Answer 1

This article could be of help to you http://www.codeproject.com/Articles/68371/Detecting-Refresh-or-Postback-in-ASP-NET

you are adding a Guid to your view state to uniquely identify each page. This mechanism works fine when you are in the Page class itself. If you need to identify requests before you reach the page handler, you need to use a different mechanism (since view state is not yet restored).

The Page.LoadComplete event is a reasonable place to check if a Guid is associated with the page, and if not, create one.

check this http://shawpnendu.blogspot.in/2009/12/how-to-detect-page-refresh-using-aspnet.html