MVC4制作网站教程第二章 用户密码修改2.3

一用户
1.1用户注册 
1.2用户登录 
1.3修改密码 

修改密码会用到一个UserChangePassword 模型类，先添加UserChangePassword类 

/// <summary>
  /// 用户修改密码模型
  /// </summary>
  [NotMapped]
  public class UserChangePassword
  {
    /// <summary>
    /// 原密码
    /// </summary>
    [Display(Name = "原密码")]
    [Required(ErrorMessage = "×")]
    [StringLength(20, MinimumLength = 6, ErrorMessage = "×")]
    [DataType(DataType.Password)]
    public string Password { get; set; }
    /// <summary>
    /// 新密码
    /// </summary>
    [Display(Name = "新密码", Description = "6-20个字符。")]
    [Required(ErrorMessage = "×")]
    [StringLength(20, MinimumLength = 6, ErrorMessage = "×")]
    [DataType(DataType.Password)]
    public string NewPassword { get; set; }
    /// <summary>
    /// 确认密码
    /// </summary>
    [Display(Name = "确认密码", Description = "再次输入密码。")]
    [Compare("NewPassword", ErrorMessage = "×")]
    [DataType(DataType.Password)]
    public string ConfirmPassword { get; set; }
  }

用到了数据库的更新，先打开UserRepository.cs 修改Update函数

/// <summary>
    /// 更新用户信息
    /// </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;
    }

在修改密码时需要查出用户信息并更新，需要添加Find(string UserName) 函数 

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

好了打开UserController，添加ChangePassword Action 

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

添加强类型（UserChangePassword）视图，在视图中添加三个文本框，修改后的视图代码 

@model Ninesky.Models.UserChangePassword
@{ 
  ViewBag.Title = "修改密码";
  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>修改密码</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="修改密码" />@Html.ValidationMessage("Message")
        </div>
      </dd>
    </dl>
    <div class="clear"></div>
  </div>
}
@section Scripts {
  @Scripts.Render("~/bundles/jqueryval")
}

								 
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