c# - 如何在 ASP.NET MVC 中呈现验证消息中的 html？

Question

我目前正在开发一个注册页面。当用户已经存在时，我想在电子邮件字段的错误消息中为用户提供登录和重置密码链接。在 Controller 中我有:

[HttpPost]
public ActionResult Register(RegistrationModel registration)
{
  ...

  if(userExists)
  {
      const string errorMessage = "User already exist. You can <a href="/account/login">login</a> ...";
      ModelState.AddModelError("Email", errorMessage);
      return View("Register", registration);
  }
}

但是当我尝试在 View 中输出此消息时，我没有得到我期望的结果。我得到像纯文本一样的 html 标记。 我已经尝试过:

@using(Html.BeginForm())
{
<div>@Html.TextBoxFor(m => m.Email)            
@{
   @Html.ValidationMessageFor(m => m.Email)

   ...

   @Html.Raw(Html.ValidationMessageFor(m => m.Email))

   ...

   string validationMessage = Html.ValidationMessageFor(m => m.Email).ToString();
   @Html.Raw(validationMessage)

   ...

   string validationMessage = Html.ValidationMessageFor(m => m.Email).ToHtmlString();
   @Html.Raw(validationMessage)

   ...

   string validationMessage = Html.ValidationMessageFor(m => m.Email).ToString();
   @(new HtmlString(validationMessage))

   ...

   string validationMessage = Html.ValidationMessageFor(m => m.Email).ToHtmlString();
   @(new HtmlString(validationMessage))

   ...

   string validationMessage = Html.ValidationMessageFor(m => m.Email).ToString();
   @(new MvcHtmlString(validationMessage))

   ...

   string validationMessage = Html.ValidationMessageFor(m => m.Email).ToHtmlString();
   @(new MvcHtmlString(validationMessage))

}
</div>
}

Answer 1

@Html.Raw(HttpUtility.HtmlDecode(Html.ValidationMessageFor(m => m.Email).ToHtmlString()))

虽然不漂亮