不添加使用继承自其他类的Class的控制器 [英] Cant Add controller which uses Class which is inherited from other class

问题描述

我正在使用Entity Framework和MVC3，而我的问题是，如果类继承自另一个类，我不能支持控制器。

示例： p>

这是基类

  using System; 
使用System.Collections.Generic; 
 
命名空间CRMEntities 
 {
 public partial class Company 
 {
 public int Id {get;组; } 
} 
 
} 
  

这是铅班）

  using System; 
使用System.Collections.Generic; 
 
命名空间CRMEntities 
 {
 public partial class Lead：Company 
 {
 public Lead（）
 {
 this.Status = 1; 
 this.IsQualified = false; 
 
} 
 
 public Nullable< short>状态{get;组; } 
 public Nullable< bool>已获得组; } 
 
 
} 
 
 
} 
  

当我尝试添加控制器下面的错误...

上下文类CODE

 code> using System; 
使用System.Data.Entity; 
使用System.Data.Entity.Infrastructure; 
 
命名空间CRMEntities 
 {
 public partial class CRMWebContainer：DbContext 
 {
 public CRMWebContainer（）
：base（name = CRMWebContainer ）
 {
} 
 
 protected override void OnModelCreating（DbModelBuilder modelBuilder）
 {
 throw new UnintentionalCodeFirstException（）; 
} 
 
 public DbSet< Employee>员工{get;组; } 
 public DbSet< Contact>联系人{get;组; } 
 public DbSet< Product>产品{get;组; } 
 public DbSet< Location>地点{get;组; } 
 public DbSet< Task>任务{get;组; } 
 public DbSet< EventInfo> EventInfoes {get;组; } 
 public DbSet<机会>机会{get;组; } 
 public DbSet< Comment>评论{get;组; } 
 public DbSet< Document>文件{get;组; } 
 public DbSet< LoginInformation> LoginInformations {get;组; } 
 public DbSet< CRMLog> CRMLogs {get;组; } 
 public DbSet< EntitySharing> EntitySharings {get;组; } 
 public DbSet< EntityFlagging> EntityFlaggings {get;组; } 
 public DbSet< EntityTagging> EntityTaggings {get;组; } 
 public DbSet< EntitySubscribing> EntitySubscribings {get;组; } 
 public DbSet< Compapny>合并{get;组; 
} 
} 
  

解决方案

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

  [Obsolete（Design only，true）] 
 public DbSet< Lead>引导{get;组;记住你不应该在你的代码中使用这个属性（这就是为什么Obsolete Attribute），因为获得潜在客户的正确方法是使用：
  var leads = Companies.OfType< Lead>（）; 
  
 
I'm using Entity Framework and MVC3, and my problem is that I can't scaffold Controllers if the class inherits from another Class.

Example:

This is Base Class
using System;
using System.Collections.Generic;

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

    }
This is 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; }


    }


}
When I tried to add controller below error comes...



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; }
    }
}

解决方案
The MVC AddController window check for a property DbSet of the ModelType you are adding.
You should do like vicentedealencar said, add to your CRMWebContainer:
[Obsolete("Design only", true)]
public DbSet<Lead> Leads { get; set; }
Remember that u should not use this property in your code (this is why the Obsolete Attribute), since the right way to get the Leads is using: 
var leads = Companies.OfType< Lead >();


                        
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