The connection string 'MyConnection' in the application's configuration file does not contain the required providerName attribute."

Question

I use Entity Framework Code First,

My connection string is in a configuration file:

    
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Answer 1

Go down in your web.config until you reach the providers tag. For instance, here's my providers statement:

you should add this System.Data.SqlClient as a provider name in your connection string so your connection string should look like this: