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XmlSerializer can't find 'System.Data.Objects.DataClasses.EntityObject'

Posted By:      Posted Date: May 22, 2011    Points: 0   Category :ADO.Net
Hi ... I hope that someone can help me with this problem that I've been having with XmlSerializer.

I've already looked through this thread: http://social.msdn.microsoft.com/Forums/en-US/asmxandxml/thread/551cee76-fd80-48f8-ac6b-5c22c234fecf/

The error I am getting is:

System.InvalidOperationException: Unable to generate a temporary class (result=1).
error CS0012: The type 'System.Data.Objects.DataClasses.EntityObject' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Data.Entity, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089'.

I've made sure that my unit test has a reference to System.Data.Entity, so it is able to compile at least.  I've also in the app.config made an assembly binding to System.Data.Entity.

Here's my class structure

[XmlRoot(Namespace = XmlSupport.MyNamespace, ElementName = XmlSupport.WantToSerialize)]
public class WantToSerialize : WantToSerializeBaseClass, IXmlSerializable  (I've tried putting this on the baseclass and the current class)
     // methods and classes
    // I've included XmlIncludes for all t

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