Entity Framework - OnModelCreating with Model First

问题

I have a Entity Framework model set up with text templates to generate the code. However, one of them creates the DBContext containing an OnModelCreating.

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        throw new UnintentionalCodeFirstException();
    }

How do expand on this, since a partial class with the same override does not work.

回答1:

You cannot use OnModelCreating when using model first (EDMX). OnModelCreating is only for scenarios without using EDMX.

回答2:

Possibly your problem is that the connection string you're using is a standard SQL Server one rather than the Entity Framework one. See this answer.

来源：https://stackoverflow.com/questions/7189624/entity-framework-onmodelcreating-with-model-first