1、定义一个基础模板类

namespace WebApplication1.Models{    /// 
    ///     可持久到数据库的领域模型的基类。    /// 
    [Serializable]    public abstract class EntityBase
     
          {        #region 构造函数        /// 
      
        ///     数据实体基类        /// 
        protected EntityBase()        {            IsDeleted = false;            AddDate = DateTime.Now;        }        #endregion        #region 属性        [Key]        public TKey Id { get; set; }        /// 
      
        ///获取或设置 获取或设置是否禁用，逻辑上的删除，非物理删除        /// 
        public bool IsDeleted { get; set; }        /// 
      
        ///     获取或设置 添加时间        /// 
        [DataType(DataType.DateTime)]        public DateTime AddDate { get; set; }        #endregion    }}
     

2、定义实体类

namespace WebApplication1.Models{    public partial class SystemAreas : EntityBase
     
          {        public SystemAreas()        {            this.ChildSystemAreas = new HashSet
      
       ();        }                public string Name { get; set; }        public string ParentId { get; set; }        public virtual ICollection
       
         ChildSystemAreas { get; set; }        public virtual SystemAreas ParentSystemAreas { get; set; }    }}
       
      
     

3、插入数据

public ActionResult Index(){    SystemAreas sa = new SystemAreas()    {        Id="12",        Name = "test"    };    TestDbContext db = new TestDbContext();    db.Set
     
      ().Add(sa);    db.SaveChanges();    return View();}