using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel.DataAnnotations;

namespace DataEntity
{
    [Table("Sys_Menu")]
    public class Menu
    {
        [Key]
        [Display(Name = "菜单编号")]
        [Column(Order = 0)]
        [Required(ErrorMessage = "菜单编号必须提供")]
        public int MenuID { get; set; }

        [Display(Name = "菜单名称")]
        [Column(Order = 1)]
        [Required(ErrorMessage = "菜单名称必须提供")]
        [StringLength(50, ErrorMessage = "不能超过50个字符")]
        public string MenuName { get; set; }

        [Display(Name = "排序号")]
        [Column(Order = 2)]
        [Required(ErrorMessage = "排序号必须提供")]
        [MaxLength(3, ErrorMessage = "排序号长度不能超过3位")]
        public int OrderCode { get; set; }

        [Display(Name = "访问地址")]
        [Column(Order = 3)]
        [StringLength(100, ErrorMessage = "访问地址不能超过100个字符")]
        public string Url { get; set; }

        [Display(Name = "父菜单")]
        [Column(Order = 4)]
        [Required(ErrorMessage = "父菜单必须提供")]
        public int ParentID { get; set; }

        /// <summary>
        /// 1个菜单有1个或多个功能点
        /// </summary>
        public virtual ICollection<Function> Functions { get; set; }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel.DataAnnotations;

namespace DataEntity
{
    [Table("Sys_Function")]
    public class Function
    {
        /// <summary>
        /// 主键ID
        /// </summary>
        [Key]
        public int FunctionID
        {
            get;
            set;
        }

        /// <summary>
        /// 模块ID
        /// </summary>
        public int MenuID
        {
            get;
            set;
        }

        /// <summary>
        /// 功能编码
        /// </summary>
        public string FunctionCode
        {
            get;
            set;
        }

        /// <summary>
        /// 功能名称
        /// </summary>
        public string FunctionName
        {
            get;
            set;
        }

        /// <summary>
        /// 功能点对应的菜单实体
        /// </summary>
        [ForeignKey("MenuID")]
        public virtual Menu Menu { get; set; }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel.DataAnnotations;

namespace DataEntity
{
    [Table("Sys_User")]
    public class User
    {
        [Key]
        [Display(Name = "用户编号")]
        [Column(Order = 0)]
        public int UserID { get; set; }
        
        [Display(Name = "用户名")]
        [Column(Order = 1)]
        [Required(ErrorMessage = "用户名必须提供")]
        [StringLength(50, ErrorMessage = "不能超过50个字符")]
        public string UserName { get; set; }

        [Display(Name = "用户姓名")]
        [Column(Order = 2)]
        [Required(ErrorMessage = "用户姓名必须提供")]
        [StringLength(50, ErrorMessage = "不能超过50个字符")]
        public string RealName { get; set; }

        [Display(Name = "密码")]
        [Column(Order = 3)]
        [Required(ErrorMessage = "登录密码必须提供")]
        [StringLength(50, ErrorMessage = "不能超过50个字符")]
        [Dat