一用戶
1.1用戶注冊 
1.2用戶登錄 
1.3修改密碼 

修改密碼會用到一個UserChangePassword 模型類，先添加UserChangePassword類 

/// <summary>  /// 用戶修改密碼模型  /// </summary>  [NotMapped]  public class UserChangePassword  {    /// <summary>    /// 原密碼    /// </summary>    [Display(Name = "原密碼")]    [Required(ErrorMessage = "×")]    [StringLength(20, MinimumLength = 6, ErrorMessage = "×")]    [DataType(DataType.Password)]    public string Password { get; set; }    /// <summary>    /// 新密碼    /// </summary>    [Display(Name = "新密碼", Description = "6-20個字符。")]    [Required(ErrorMessage = "×")]    [StringLength(20, MinimumLength = 6, ErrorMessage = "×")]    [DataType(DataType.Password)]    public string NewPassword { get; set; }    /// <summary>    /// 確認密碼    /// </summary>    [Display(Name = "確認密碼", Description = "再次輸入密碼。")]    [Compare("NewPassword", ErrorMessage = "×")]    [DataType(DataType.Password)]    public string ConfirmPassword { get; set; }  }

用到了數據庫的更新，先打開UserRepository.cs 修改Update函數

/// <summary>    /// 更新用戶信息    /// </summary>    /// <param name="user"></param>    /// <returns></returns>    public override bool Update(User user)    {      dbContext.Users.Attach(user);      dbContext.Entry<User>(user).State = System.Data.EntityState.Modified;      if (dbContext.SaveChanges() > 0) return true;      else return false;    }

在修改密碼時需要查出用戶信息并更新，需要添加Find(string UserName) 函數 

/// <summary>    /// 查找用戶    /// </summary>    /// <param name="UserName">用戶名</param>    /// <returns></returns>    public User Find(string UserName)    {      return dbContext.Users.SingleOrDefault(u => u.UserName == UserName);    }

好了打開UserController，添加ChangePassword Action 

/// <summary>    /// 修改密碼    /// </summary>    /// <returns></returns>    [UserAuthorize]    public ActionResult ChangePassword()    {      return View();    }    [HttpPost]    [UserAuthorize]    public ActionResult ChangePassword()    {      return View();    }

添加強類型（UserChangePassword）視圖，在視圖中添加三個文本框，修改后的視圖代碼 

@model Ninesky.Models.UserChangePassword@{   ViewBag.Title = "修改密碼";  Layout = "~/Views/Shared/_Layout.cshtml";}<div class="banner">  <img src="~/Skins/Default/Images/banner.jpg" /></div>@using (Html.BeginForm()){  @Html.ValidationSummary(true)  <div class="form">    <dl>      <dt>修改密碼</dt>      <dd>        <div class="label">@Html.LabelFor(model => model.Password)：</div>        <div class="ctrl">@Html.PasswordFor(model => model.Password)          @Html.ValidationMessageFor(model => model.Password)          @Html.DisplayDescriptionFor(model => model.Password)        </div>      </dd>      <dd>        <div class="label">@Html.LabelFor(model => model.NewPassword)：</div>        <div class="ctrl">@Html.PasswordFor(model => model.NewPassword)          @Html.ValidationMessageFor(model => model.NewPassword)          @Html.DisplayDescriptionFor(model => model.NewPassword)        </div>      </dd>      <dd>        <div class="label">@Html.LabelFor(model => model.ConfirmPassword)：</div>        <div class="ctrl">@Html.PasswordFor(model => model.ConfirmPassword)          @Html.ValidationMessageFor(model => model.ConfirmPassword)          @Html.DisplayDescriptionFor(model => model.ConfirmPassword)        </div>      </dd>      <dd>        <div class="label"></div>        <div class="ctrl">          <input type="submit" value="修改密碼" />@Html.ValidationMessage("Message")        </div>      </dd>    </dl>    <div class="clear"></div>  </div>}@section Scripts {  @Scripts.Render("~/bundles/jqueryval")}