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POSilverlight: Web Service Call JSON Error
 

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  1. POSilverlight: Web Service Call JSON Error
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    <p>OK, so I have no idea why this isn't working. I've found 4 different tutorials/examples of calling a JSON web service asynchronously within Silverlight, and all of them use the same format / logic as I am. On the line "using (streamCommunities = request.EndGetRequestStream(asyncResult))" it is throwing the error I attached at the bottom, an ArgumentException saying it doesn't like the asyncResult. Why is this if every other example I've found uses the same logic?</p> <pre><code> private void GetSource(object state) { HttpWebRequest request = (HttpWebRequest)WebRequest.Create(new Uri(MyValidUri)); request.Method = "POST"; request.ContentType = "application/json"; request.BeginGetResponse(new AsyncCallback(ReadCommunityCallBack), request); } private void ReadCommunityCallBack(IAsyncResult asyncResult) { HttpWebRequest request = (HttpWebRequest)asyncResult.AsyncState; using (Stream outStream = request.EndGetRequestStream(asyncResult)) { // DO STUFF HERE } } </code></pre> <p>And the error is here:</p> <pre><code>System.ArgumentException was unhandled by user code Message=Value does not fall within the expected range. StackTrace: at System.Net.Browser.ClientHttpWebRequest.EndGetRequestStream(IAsyncResult asyncResult) at cenTabbedFeed.MainPage.ReadCommunityCallBack(IAsyncResult asyncResult) at System.Net.Browser.ClientHttpWebRequest.&lt;&gt;c__DisplayClass1a.&lt;InvokeGetResponseCallback&gt;b__18(Object state2) at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem() at System.Threading.ThreadPoolWorkQueue.Dispatch() at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback() </code></pre> <p>Like I said, I've been scouring examples and trying to find an answer on MSDN and I'm stuck and frustrated.</p> <p>-Thanks in advance RJ</p>
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    1. USRJ Cuthbertson
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      1. USSimen Echholt
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    1. COtry to catch the exception by placing it in a try/catch block. That error message tells that you are not catching the error. If you catch it, maybe you have more info about it.
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      1. POSilverlight: Web Service Call JSON Error
      1. USRaphael Ayres
    2. COBut maybe you have more info about it. The problem may be on the server side.
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      1. POSilverlight: Web Service Call JSON Error
      1. USRaphael Ayres
    3. COIt tells me that error that I posted... e.Message = Value does not fall within the expected range. That doesn't solve the error.
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      1. POSilverlight: Web Service Call JSON Error
      1. USRJ Cuthbertson
 

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