AJAX UpdatePanel Causes Entire Page Postback

0
votes

I am facing a problem that I cannot solve!

I have two DropDownLists inside an UpdatePanel with AutoPostBack=true, UpdateMode="always", ChildrenAsTriggers="true" and EnableViewState="false".

The values shown inside the second DropDownList are dependent of the SelectedValue on the first one.

Whenever the selected value on a DropDownList, the entire page is postback. I want only the postback running inside the updatepanel.

Note: The ScriptManager has EnablePartialRendering="true".

What should I do?

1
asp.netasp.net-ajaxupdatepanelautopostback
perhaps post the markup? - Xhalent
What do you mean by "the entire page is postback"? you cant get an async post back or you are referring to the quantity of data sent to the server? - DavRob60

1 Answers

0
votes

Well you must have wrapped the whole page inside the Update Panel i suppose and also as i suspect UpdateMode="always" is the cukprit. Change that to Conditional. Because the update panel is going to be refreshed only on children triggers and not when anyhting and everything happens on the page.