Home / Community & Support / Developer Productivity Tools Forums / ASP.NET > General Discussions > Unexpected page requests

• Jonathan

  Posted on Jun 10, 2011 (permalink)

  Hi

  In summary

  I have discovered that when using the latest versions of Chrome or Firefox that I am getting an expected page Request, causing the page to re-load.  This does not happen using IE8.

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  In detail

  We have an ASP.NET (.NET 3.5) site that uses Telerik controls (not sure if that's relevant) and I find that I am getting an extra hit to the asp.net page.

  The example is a page with a list of products and a paging control.  I note the following events:

  1. User clicks on "next page"
  2. The page's OnLoad() event handler fires:
     • this.Page.IsPostBack = true
     • this.Request.HttpMethod = "Post"
     • ViewState is as expected
  3. The page goes through all the steps to identify the next page's products and data binds them
  4. The page renders in the browser, but the "loading" icon still indicates activity
  5. The page's OnLoad() event handler fires:
     • this.Page.IsPostBack = false
     • this.Request.HttpMethod = "GET"
     • ViewState is empty (it's not considered a post back)
  6. The page goes through all the steps to identify the next page's products
  7. The OnRender event runs and the browser's "loading" icon indicates that loading has completed - but there is no indication that anything new has been rendered....it's almost as if it's written to a different channel.
  8. If "Next Page" is then called, this again is a PostBack and the ViewState is as expected

  I can't work out why this second page load event (that's a GET) should occur for FF or Chrome (but not IE).
  
  

  The second event:

  1. messes up my diagnostic tracing
  2. presumably will cause the servers to do far more work in Production than is required

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  Any ideas what could be causing this (and how to stop it)?
  
  

  Many thanks in advanced

  Griff
  
  ----------------------------
  PS - I originally posted this problem to forums.asp.net ( http://forums.asp.net/t/1688350.aspx/1?Unexpected+page+requests ) and one response suggested that this behaviour was related to Telerik, hence this post.
  
  

• Georgi Tunev Georgi Tunev

  Posted on Jun 16, 2011 (permalink)

  Hello Jonathan,
  
  What happens if you remove Telerik's controls? The actions that you described seems OK to me and at this point I cannot tell what might be the reason for the problem. I also checked the forum post you linked and although I do not agree with Jeyaseelan's statement, the easiest way to determine whether RadControls are related to the problem is to remove them from the page and to repeat the same steps.
  If the problem does not occur without our controls or it is not possible to remove them from the page, please send us a sample project that isolates the issue so we can investigate further. We will check it right away and do our best to help you.
  
  
  Regards,
  Georgi Tunev
  the Telerik team

  Browse the vast support resources we have to jump start your development with RadControls for ASP.NET AJAX. See how to integrate our AJAX controls seamlessly in SharePoint 2007/2010 visiting our common SharePoint portal.

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