Clear ASP page cache – Page_Load() firing multiple time in RadWindow Popup

Setting ReloadOnShow property of RadWindow for Popup to true causes its Page_load to be executed multiple times hence redundant multiple database calls causing to some extent of performance hit.

ReloadOnShow needs to be  set to true since page_load/refresh of Popup wasn’t firing on subsequent opens.


We can set ReloadOnShow to false and use alternative code in page_load as following in C#:

below code will clear the cache of ASPX page and thus reloaded every time in browser.

Note : you should run these statement before sending any HTML to the user. If in doubt, use Respose.Buffer = True to buffer all html

Response.AppendHeader("Pragma", "no-cache");
Response.Expires = -1;
Response.CacheControl = "no-cache";

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