EntityConnectionStringBuilder exception

I am trying to create a connection string for my EF Code-First ASP.NET application like this :



EntityConnectionStringBuilder csb = new EntityConnectionStringBuilder();



csb.ProviderConnectionString = "Server=.;Database=MyAappUser Id=user;Password=passwd;Integrated Security=False";

csb.Provider = "System.Data.SqlClient";

And I get this exception :



Keyword not supported: 'provider'.



Can you tell me what I am missing? Thanks.