Cant添加使用继承自其他类的Class的控制器

Question

我正在使用Entity Framework和MVC3，我的问题是如果该类继承自另一个类，我就无法构建控制器。

示例：

这是基类

using System;
using System.Collections.Generic;

    namespace CRMEntities
    {
        public partial class Company
        {
            public int Id { get; set; }
        }

    }

这是Lead Class（Child）

using System;
using System.Collections.Generic;

namespace CRMEntities
{
    public partial class Lead : Company
    {
        public Lead()
        {
            this.Status = 1;
            this.IsQualified = false;

        }

        public Nullable<short> Status { get; set; }
        public Nullable<bool> IsQualified { get; set; }


    }


}

当我尝试添加控制器时，出现错误...

Context Class COde

using System;
using System.Data.Entity;
using System.Data.Entity.Infrastructure;

namespace CRMEntities
{
    public partial class CRMWebContainer : DbContext
    {
        public CRMWebContainer()
            : base("name=CRMWebContainer")
        {
        }

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

        public DbSet<Employee> Employees { get; set; }
        public DbSet<Contact> Contacts { get; set; }
        public DbSet<Product> Products { get; set; }
        public DbSet<Location> Locations { get; set; }
        public DbSet<Task> Tasks { get; set; }
        public DbSet<EventInfo> EventInfoes { get; set; }
        public DbSet<Opportunity> Opportunities { get; set; }
        public DbSet<Comment> Comments { get; set; }
        public DbSet<Document> Documents { get; set; }
        public DbSet<LoginInformation> LoginInformations { get; set; }
        public DbSet<CRMLog> CRMLogs { get; set; }
        public DbSet<EntitySharing> EntitySharings { get; set; }
        public DbSet<EntityFlagging> EntityFlaggings { get; set; }
        public DbSet<EntityTagging> EntityTaggings { get; set; }
        public DbSet<EntitySubscribing> EntitySubscribings { get; set; }
        public DbSet<Compapny> Compapnies { get; set; }
    }
}

Answer 1

MVC AddController窗口检查要添加的ModelType的属性DbSet。 你应该像vicentedealencar那样说，添加到你的CRMWebContainer：

[Obsolete("Design only", true)]
public DbSet<Lead> Leads { get; set; }

请记住，你不应该在你的代码中使用这个属性（这就是Obsolete Attribute的原因），因为正确使用Leads的方法是：

var leads = Companies.OfType< Lead >();