A ProviderManifestToken string error was not returned by the provider.

asp.net-mvc-3 dbcontext entity-framework mysql

Accepted Answer

The MySQL connector/Net was the cause of the issue.

I had been using MySQL connector/Net 6.3.5, and the problem was resolved once I removed it and installed MySQL connector/Net 6.5.4. At http://www.mysql.com/products/connector/, you may discover the newest connections.

2
4/23/2012 11:12:17 PM

Popular Answer

I understand that for a few of you, this may seem extremely elementary, however this exception is also issued when EF is unable to find a Connection String to utilize. Make sure the connection String is added to your client application rather than the class library that houses your data access code if you're dealing with a multi-layered application. My two cents, alone.



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