public class ModelBase    {        public ModelBase()        {            CreateTime = DateTime.Now;        }        [Key]        public virtual int ID { get; set; }        public virtual DateTime CreateTime { get; set; }    }

[Table("CustomerServer")]    public partial class CustomerServer : ModelBase    {        public string ServerId { get; set; }        public string ServerName { get; set; }                public string Email { get; set; }        public string Mobile { get; set; }        public virtual List<Customer> CustomerManagerFor { get; set; }}

[Table("Customer")]    public class Customer : ModelBase    {        [Required(ErrorMessage = "分支编号不能为空！"), MaxLength(4, ErrorMessage = "分支编号不能超过4个字符！")]        public string BranchId { get; set; }        [Required(ErrorMessage = "客户编号不能为空！"), MaxLength(10, ErrorMessage = "客户编号不能超过10个字符！")]        public string CustomerId { get; set; }        [Required(ErrorMessage = "客户姓名不能为空！"), MaxLength(50, ErrorMessage = "客户姓名不能超过50个字符！")]        public string Name { get; set; }        [Required(ErrorMessage = "性别不能为空！")]        public int Sex { get; set; }        [Required(ErrorMessage = "生日不能为空！")]        public DateTime Birthday { get; set; }        [Required(ErrorMessage = "资金账号不能为空！"), MaxLength(40, ErrorMessage = "资金账号不能超过40个字符！")]        public string FundAccount { set; get; }        [Required(ErrorMessage = "资产不能为空！")]        public decimal Assets { get; set; }        [Required(ErrorMessage = "联系方式不能为空！"), MaxLength(40, ErrorMessage = "联系方式不能超过40个字符！")]        public string Contact { get; set; }        [Required(ErrorMessage = "地级市不能为空！")]        public int City { get; set; }        [InverseProperty("CustomerManagerFor")]        [Required(ErrorMessage = "客户经理不能为空！")]        public virtual CustomerServer CustomerManager { get; set; }                [Required(ErrorMessage = "开户日期不能为空！")]        public DateTime OpeningDate { get; set; }        [Required(ErrorMessage = "风险类型不能为空！")]        public int RiskType { get; set; }        [Required(ErrorMessage = "客户类型不能为空！")]        public int CustomerType { get; set; }    }    [AttributeUsage(AttributeTargets.Property, AllowMultiple = false, Inherited = true)]    public class UniqueAttribute : ValidationAttribute    {        public override Boolean IsValid(Object value)        {            //校验数据库是否存在当前Key            return true;        }    }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)        {            Database.SetInitializer<CrmDbContext>(null);            base.OnModelCreating(modelBuilder);            modelBuilder.Entity<Customer>().HasRequired(v => v.CustomerManager).WithMany(d => d.CustomerManagerFor).Map(v => v.MapKey("CustomerManager")).WillCascadeOnDelete(false);        }
　　　　public DbSet<Customer> Customers { get; set; }
　　　　public DbSet<CustomerServer> CustomerServers { get; set; }

IQueryable<Customer> queryList = dbContext.Customers.Include("CustomerManager");