MVC4制作网站教程第二章 部分用户功能实现代码

用户部分要实现的功能有：
序 
一、用户 
1.1用户注册 
1.2用户登录 
1.3修改密码 
1.4修改资料

要实现这些目的首先新建用户（Model）模型

/// <summary> /// 用户模型 /// </summary> public class User { [Key] public int UserId { get; set; } /// <summary> /// 用户组Id /// </summary> [Display(Name="用户组Id")] [Required(ErrorMessage = "×")] public int GroupId { get; set; } /// <summary> /// 用户名 /// </summary> [Display(Name="用户名",Description="4-20个字符。")] [Required(ErrorMessage = "×")] [StringLength(20, MinimumLength = 4, ErrorMessage = "×")] public string UserName { get; set; } /// <summary> /// 密码 /// </summary> [Required] [StringLength(256)] public string Password { get; set; } /// <summary> /// 性别【0-男；1-女；2-保密】 /// </summary> [Display(Name="性别")] [Required(ErrorMessage = "×")] [Range(0,2,ErrorMessage = "×")] public byte Gender { get; set; } /// <summary> /// Email /// </summary> [Display(Name="Email",Description="请输入您常用的Email。")] [Required(ErrorMessage = "×")] [EmailAddress(ErrorMessage = "×")] public string Email { get; set; } /// <summary> /// 密保问题 /// </summary> [Display(Name="密保问题",Description="请正确填写，在您忘记密码时用户找回密码。4-20个字符。")] [Required(ErrorMessage = "×")] [StringLength(20, MinimumLength = 4, ErrorMessage = "×")] public string SecurityQuestion { get; set; } /// <summary> /// 密保答案 /// </summary> [Display(Name="密保答案",Description="请认真填写，忘记密码后回答正确才能找回密码。2-20个字符。")] [Required(ErrorMessage = "×")] [StringLength(20, MinimumLength = 2, ErrorMessage = "×")] public string SecurityAnswer { get; set; } /// <summary> /// QQ号码 /// </summary> [Display(Name="QQ号码")] [RegularExpression("^[1-9][0-9]{4-13]$",ErrorMessage = "×")] [StringLength(12, MinimumLength = 6, ErrorMessage = "×")] public string QQ { get; set; } /// <summary> /// 电话号码 /// </summary> [Display(Name="电话号码",Description="常用的联系电话（手机或固话），固话格式为：区号-号码。")] [RegularExpression("^[0-9-]{11-13}$",ErrorMessage = "×")] public string Tel { get; set; } /// <summary> /// 联系地址 /// </summary> [Display(Name="联系地址",Description="常用地址，最多80个字符。")] [StringLength(80, ErrorMessage = "×")] public string Address { get; set; } /// <summary> /// 邮编 /// </summary> [Display(Name="邮编")] [RegularExpression("^[0-9]{6}$",ErrorMessage = "×")] public string PostCode { get; set; } /// <summary> /// 注册时间 /// </summary> public DateTime? RegTime { get; set; } /// <summary> /// 上次登录时间 /// </summary> public DateTime? LastLoginTime { get; set; } /// <summary> /// 用户组 /// </summary> public virtual UserGroup Group { get; set; } }