“Unsupported context type” while creating a controller using MVC controller Entity Framework. MVC4

Question

Here is my code (Model);

  public class XpsEntity
  {
    public DbSet<AModel> A { get; set; }
    public DbSet<TModel> T { get; set; }

    public class SDbContext : DbContext
    {
        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            modelBuilder.Entity<XpsEntity>().ToTable("Table1");
            modelBuilder.Entity<XpsEntity>().ToTable("Table2");

        }
    }

Is my coding wrong? Because every time I create a controller using MVC Controller Entity Framework. I always get the "Unsupported context type" error.

Here is the screenshot for adding the controller.

Answer 1

DbSet properties need to be nested in a DbContext derived class

public class SDbContext : DbContext {
    protected override void OnModelCreating(DbModelBuilder modelBuilder) {
        modelBuilder.Entity<AModel>().ToTable("Table1");
        modelBuilder.Entity<TModel>().ToTable("Table2");
    }

    public DbSet<AModel> A { get; set; }
    public DbSet<TModel> T { get; set; }
}