protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder) { // Visual Studio 2015 | Use the LocalDb 12 instance created by Visual Studio optionsBuilder.UseSqlServerWithMaterialization(@"Server=(localdb)\mssqllocaldb;Database=Ef7Tests;Trusted_Connection=True;"); // Visual Studio 2013 | Use the LocalDb 11 instance created by Visual Studio //optionsBuilder.UseSqlServer(@"Server=(localdb)\mssqllocaldb;Database=Ef7Tests;Trusted_Connection=True;"); }