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Thread: Eventhandler issue after upgrading to .net 4 and vs2010

  1. 09-29-2011, 02:01 PM #1
    allstar is offline Member
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    Apr 2009
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    90

    Default Eventhandler issue after upgrading to .net 4 and vs2010

    I am receiving the exception below in the CallEvent function after ugprading my store application to .net 4 and vs2010. Has anyone run into this issue? Please post solution.

    Exception: You must write ContentLength bytes to the request stream before calling [Begin]GetResponse.
    ...AllStar
  2. 11-21-2011, 02:31 PM #2
    John Morrison is offline Junior Member
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    Sep 2008
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    After so much time i am sure you have already figured this out. I am not sure if you are using 9.1.0.1 but I was and ran in to the same issue.

    I dont know if the behavior of BeginGetRequestStream changed in .net 4 , In order to fix this i needed to modify the source code and move some things out in the eventhandler.. If you are interested and have a full source code license i can provide you with fix to properly use the aspdotnetstorefront eventhandlers in .net 4


    To outline the fix: You would need to move the lines containing BeginGetResponse as well as the ThreadPool.RegisterWaitForSingleObject in the event handler to the ReadCallbackRequest callback method. Then delete the rs.ResponseStream.Close line.

    The reason for the error is because the original code is trying to lauch both the
    BeginGetRequestStream and the BeginGetResponse simultaneously on two different thread however BeginGetRequestStream needs to complete before BeginGetResponse is called.

    Moving BeginGetResponse to the delegate ReadCallbackRequest makes sure the post completed before we try to read the response from it.
    Morrison Consulting
    Check out our AspDotNetStorefront Add-Ons
  3. 02-16-2012, 10:39 PM #3
    verishare is offline Junior Member
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    Jul 2009
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    Yakima,WA
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    5

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    We are running 9.2 and having problems getting handlers to work. I can get it to fire once or twice and then nothing. Any insight would be appreciated. We have the source. Thanks.