How to use multiple model with model binder-mvc.net

using System;

using System.Collections.Generic;

using System.Data.Entity;

using System.Data.Entity.ModelConfiguration.Configuration;

using System.Linq;

using System.Reflection;

using System.Web;

namespace XYZ.DAL

{

public class ApplicationDAL :DbContext {

protected override void OnModelCreating(DbModelBuilder modelBuilder)

{

base.OnModelCreating(modelBuilder);

modelBuilder.Entity().ToTable("A1");

//modelBuilder.Entity().ToTable("A2");

// modelBuilder.Entity().ToTable("A3");

}

public DbSet A1s { get; set; }

public DbSet A2s { get; set; }

public DbSet A3s { get; set; }

}