MVC Entity Framework error / EF Error

EF Error

 

 

Problem

From a page in IIS or a debug session in Visual Studio, you receive the following error:

The associated metadata type for type contains the following unknown properties or fields:

Please make sure that the names of these members match the names of the properties on the main type

Root Cause

The MetadataGenerator.cs file has references to out-of-date relationships.

Solution

Rebuild or edit the MetadataGenerator.cs file.  Since MetadataGenerator.cs is an autogenerated file.

Be careful that you don’t lose custom DataAnnotations that you have made for UI and client-side error handling.

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