Hi Konstantin,
I noticed in your sample project, there's no ClientIDMode="Auto" attribute for the RadioButtonList. However, In my case, if I remove that, it won't work even once. If I add it however, ajax only works once but not on succeeding clicks. Moreover, my panel is actually inside a RadPageView:
Can this have affected anything? My RadScriptManager and RadAjaxManger is in the master page.
I have used Chrome to debug my page, and it turns out on the second click, Im encountering this issue again:
Uncaught Sys.WebForms.PageRequestManagerServerErrorException: Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 404
I keep encountering this issue whenever I use AjaxSettings or Asp:updatepanel. Am I missing something? When I comment out Ajax, I do not encounter any errors so I'm quite certain nothing is wrong from my C# code. I'm already adding the scriptreference in my master page:
Also, using Fiddler, I noticed that at the second postback, my url is being changed from http://localhost/Questionnaire/Question.aspx to only http://localhost/Question.aspx, which maybe is causing this 404 resource not found. I don't understand why using Ajax will alter this. Please advise.
Thanks! Your help is greatly appreciated!