实体框架——生成空类

我有一个存在的SQL Server数据库。

我在visual studio 2013 asp.net项目中添加了一个新的ado.net实体数据模型，并将其命名为"DB"，模型内容为"从数据库生成"。

实体框架项已成功添加到项目中。VS自动为每个表生成一个文件和一个类，但对于实体名称"DB"，它只创建了一个带有注释的文件。

DB.cs文件的样子:

    //------------------------------------------------------------------------------
    // <auto-generated>
    //     This code was generated from a template.
    //
    //     Manual changes to this file may cause unexpected behavior in your application.
    //     Manual changes to this file will be overwritten if the code is regenerated.
    // </auto-generated>
    //------------------------------------------------------------------------------

下面是文件Person.cs(代表表格Person)的样子:

    //------------------------------------------------------------------------------
    // <auto-generated>
    //     This code was generated from a template.
    //
    //     Manual changes to this file may cause unexpected behavior in your application.
    //     Manual changes to this file will be overwritten if the code is regenerated.
    // </auto-generated>
    //------------------------------------------------------------------------------
    namespace Kupa_V1.Dal
    {
        using System;
        using System.Collections.Generic;
        public partial class Person
        {
            public Person()
            {
                this.Family = new HashSet<Family>();
                this.Family1 = new HashSet<Family>();
                this.Help = new HashSet<Help>();
            }
            public int PersonId { get; set; }
            public Nullable<int> FamilyId { get; set; }
            public string FirstName { get; set; }
            public string LastName { get; set; }
            public System.DateTime DateOfBirth { get; set; }
            public string TeudatZehut { get; set; }
            public string Phone { get; set; }
            public string Email { get; set; }
            public string Issue { get; set; }
            public virtual ICollection<Family> Family { get; set; }
            public virtual ICollection<Family> Family1 { get; set; }
            public virtual Family Family2 { get; set; }
            public virtual ICollection<Help> Help { get; set; }
            public virtual Work Work { get; set; }
        }
    }