In a project using Entity Framework, I received the error:
Error 111: Properties referred by the principal role MyTable must be exactly identical to the key of the entitytype when you compile the project in Visual Studio.
Entity Framework Resolution
I had two existing tables in the edmx diagram.
To create a relationship:
I had to make my identity field a primary key. I then added the relationship.
In the entity framework diagram, I deleted and re-added the foreign table.
However, I did not delete/re-add the table with the new primary key.
Then, re-add the foreign table.
Next, Visual Studio added the relationship. The problem is that it builds a relationship to a table that thought did not have a primary key.
When I deleted/re-added the primary key table from the diagram, the error resolved.
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