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POWCF Proxy not being generated properly
 

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  1. POWCF Proxy not being generated properly
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    <p>I have a WCF Service that needs to return a file from a database. To that end, I have created two MessageContract classes, one for input and one for output. The code is as follows:</p> <pre><code>[MessageContract] public class AttachmentFile { [MessageHeader(MustUnderstand = true)] public Int32 AttachmentID; [MessageHeader] public String FileName; [MessageBodyMember(Order = 1)] public Stream Data; public AttachmentFile(Attachment att) { AttachmentID = (Int32)att.AttachmentID; FileName = att.FileName; Data = new MemoryStream(att.FileBytes); } } [MessageContract] public class AttachmentFileID { [MessageBodyMember] public Int32 AttachmentID; } public AttachmentFile GetAttachmentFile(AttachmentFileID AttachmentID) { } </code></pre> <p>The generated WSDL looks correct:</p> <pre><code>&lt;wsdl:operation name="GetAttachmentFile"&gt; &lt;soap12:operation soapAction="http://tempuri.org/IAttachments/GetAttachmentFile" style="document"/&gt; &lt;wsdl:input name="AttachmentFileID"&gt; &lt;soap12:body use="literal"/&gt; &lt;/wsdl:input&gt; &lt;wsdl:output name="AttachmentFile"&gt; &lt;soap12:header message="i0:AttachmentFile_Headers" part="AttachmentID" use="literal"/&gt; &lt;soap12:header message="i0:AttachmentFile_Headers" part="FileName" use="literal"/&gt; &lt;soap12:body use="literal"/&gt; &lt;/wsdl:output&gt; &lt;/wsdl:operation&gt; </code></pre> <p>However, when I run <code>svcutil.exe <a href="http://localhost:8002/IAttachments?wsdl" rel="nofollow">http://localhost:8002/IAttachments?wsdl</a></code>, the generated code comes out as:</p> <pre><code>public string GetAttachmentFile(ref int AttachmentID, out System.IO.Stream Data) { AttachmentFileID inValue = new AttachmentFileID(); inValue.AttachmentID = AttachmentID; AttachmentFile retVal = ((IAttachments)(this)).GetAttachmentFile(inValue); AttachmentID = retVal.AttachmentID; Data = retVal.Data; return retVal.FileName; } </code></pre> <p>I'm sure I'm missing something simple, but I can't seem to find what it is. Does anyone have any clues to what could be causing this?</p>
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    1. USDirk Dastardly
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    1. COWhat if you call `svcutil` with a `/wrapped` parameter? This will prevent "unwrapping" the parameters (as seems to happen in your case...). Also - try the `/messageContract` switch on svcutil to tell it you're using a message contract - helps at times...
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      1. USmarc_s
    2. CONothing is wrong - the contract is the same. You should be able to call the service with that client and it should work out just fine.
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      1. POWCF Proxy not being generated properly
      1. UScarlosfigueira
    3. COThanks. The /messagecontract switch did the trick. As soon as I figure out how, I'll accept your answer. carlosfigueira: While I know that it's technically correct and will work, it's now how the original call was written and worse, it's not intuitive. My boss would never accept a call like that in our code.
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