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POMetadataException - Unable to load the specified metadata resource?
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  1. POMetadataException - Unable to load the specified metadata resource?
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    copied!<p>I have a solution with two relevant projects. The first builds <em>My.exe</em>, and the second builds a class library <em>MyModel.dll</em> that contains only my EF model. </p> <p>I'm getting a <code>MetadataException</code> in my Model's VS-generated <code>ObjectContext</code> ctor. I've read through <a href="http://blogs.teamb.com/craigstuntz/2010/08/13/38628/" rel="nofollow">Troubleshooting Entity Framework Connection Strings</a>, but I still haven't been able to narrow down my problem.</p> <p>The offending constructor code:</p> <pre><code>public MyEntities() : base(@"name=MyEntities", "MyEntities") // MetadataException here { this.ContextOptions.LazyLoadingEnabled = true; OnContextCreated(); } </code></pre> <p><a href="http://msdn.microsoft.com/en-us/library/cc982042.aspx" rel="nofollow">Metadata Artifact Processing</a> is set to <code>EmbedInOutputAssembly</code>. When I open <em>MyModel.dll</em> in Reflector, I see:</p> <ul> <li>DataAccessLayer.MyModel.csdl</li> <li>DataAccessLayer.MyModel.msl</li> <li>DataAccessLayer.MyModel.ssdl</li> </ul> <p>I've tried setting <a href="http://msdn.microsoft.com/en-us/library/aa983962%28v=vs.71%29.aspx" rel="nofollow">Build Action</a> for my <em>app.config</em> to <code>None</code> and <code>Content</code>, and neither makes a difference. The config file contains:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8" ?&gt; &lt;configuration&gt; &lt;connectionStrings&gt; &lt;add name="MyEntities" connectionString="metadata= res://*/DataAccessLayer.MyModel.csdl| res://*/DataAccessLayer.MyModel.ssdl| res://*/DataAccessLayer.MyModel.msl; provider=Devart.Data.PostgreSql; provider connection string=&amp;quot; User Id=MY_USER; Password=MY_PASS; Host=127.0.0.1; Database=MY_DB; Persist Security Info=True&amp;quot;" providerName="System.Data.EntityClient" /&gt; &lt;/connectionStrings&gt; &lt;/configuration&gt; </code></pre> <p>I've tried replacing the resource prefix <code>res://*/</code> with both <code>res://MyModel.dll/</code> and <code>res://MyModel/</code>, leaving the rest intact (because it matches the resources in <em>MyModel.dll</em>), but neither solved the problem. My class library is <a href="http://msdn.microsoft.com/en-us/library/ms227566%28v=vs.80%29.aspx" rel="nofollow">strong-named</a>.</p> <p>Both my executable and class library projects contain references to <code>System.Data.Entity</code> and <code>Devart.Data.PostgreSql</code>, and <em>My.dll</em> is being built to the same location as <em>My.exe</em>.</p>
 

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