Joseph Michael Pesch
VP Programming

Could not load type 'System.Data.Entity.Design.AspNet.EntityDesignerBuildProvider'

by 21. December 2010 10:51

Make sure you have the assemblies referenced as follows:

<compilation debug="true" targetFramework="4.0">
  <assemblies>
    <add assembly="System.Security, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
    <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
    <add assembly="System.Data.Entity.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
  </assemblies>
  <buildProviders>
    <add extension=".edmx" type="System.Data.Entity.Design.AspNet.EntityDesignerBuildProvider" />
  </buildProviders>
</compilation>

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