/// <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; }
 }

/// <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;
 }

/// <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);
 }

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

@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")
}

[HttpPost]
 [UserAuthorize]
 public ActionResult ChangePassword(UserChangePassword userChangePassword)
 {
 userRsy = new UserRepository();
 if (userRsy.Authentication(UserName, Common.Text.Sha256(userChangePassword.Password)) == 0)
 {
 var _user = userRsy.Find(UserName);
 if (_user == null)
 {
 Error _e = new Error { Title = "修改密碼失敗", Details = "修改密碼時，系統查詢不到用戶信息", Cause = Server.UrlEncode("<li>用戶在修改密碼界面停留的時間過長，登錄信息已失效。</li><li>系統錯誤。</li>"), Solution = Server.UrlEncode("<li>返回<a href='" + Url.Action("ChangePassword", "User") + "'>修改密碼</a>頁面，輸入正確的信息后重新注冊</li><li>聯系網站管理員</li>") };

 return RedirectToAction("Error", "Prompt", _e);
 }
 _user.Password = Common.Text.Sha256(userChangePassword.NewPassword);
 if (userRsy.Update(_user))
 {
 Notice _n = new Notice { Title = "成功修改密碼", Details = "您已經成功修改密碼，請牢記您的新密碼！", DwellTime = 5, NavigationName = "登陸頁面", NavigationUrl = Url.Action("Login", "User") };
 return RedirectToAction("Notice", "Prompt", _n);
 }
 else
 {
 Error _e = new Error { Title = "修改密碼失敗", Details = "修改密碼時，更新數據庫失敗！", Cause = Server.UrlEncode("<li>系統錯誤。</li>"), Solution = Server.UrlEncode("<li>返回<a href='" + Url.Action("ChangePassword", "User") + "'>修改密碼</a>頁面，輸入正確的信息后重新注冊</li><li>聯系網站管理員</li>") };
 return RedirectToAction("Error", "Prompt", _e);
 }
 }
 else
 {
 ModelState.AddModelError("Password", "原密碼不正確，請重新輸入");
 return View();
 }
 
 }

/// <summary>
 /// 獲取用戶名
 /// </summary>
 public string UserName { 
 get {
 HttpCookie _cookie = Request.Cookies["User"];
 if (_cookie == null) return "";
 else return _cookie["UserName"];
 }
 }