MVC Post导致QueryString在重新加载相同视图时丢失

Question

请让我解释一下设置.

我有一个更改密码控制器/操作和视图.以下是我的帐户控制器中的操作签名:

public ActionResult ChangePassword(ChangePasswordMessageId? message)

[HttpPost]
public ActionResult ChangePassword(ChangePasswordViewModel model)

首次加载更改密码时,我在查询字符串中有一些数据.这是一个例子:

https://www.mywebsite.com/Account/ChangePassword?mobile=1

这是视图中的Form声明.

@using (Html.BeginForm("ChangePassword", "Account", FormMethod.Post, new { @class = "form-horizontal", role = "form" }))
{
    @Html.AntiForgeryToken()

表单通过简单的提交按钮提交:

<div class="form-group">
  <div class="col-md-offset-2 col-md-4">
    <input type="submit" value="Change Password" class="btn btn-primary btn-block" />
  </div>
</div>

表单有3个字段:当前密码,新密码和确认密码.如果用户正确填写所有数据,并通过所有客户端验证,表单工作正常.除了一个用例外,一切正常.

假设用户输入了不正确的旧密码值.当我进入上面的HTTPPOST ChangePassword操作时,它将失败.这就是代码的样子.

[HttpPost]
            public ActionResult ChangePassword(ChangePasswordViewModel model)
            {   
                if (ModelState.IsValid)
                {
                    try
                    {
                        MembershipUser user = Membership.GetUser();
        //The NEXT line is the one that fails if they supply the wrong Old Password value.
        //The code then falls to the catch condition below.
                        bool changePassword = user.ChangePassword(model.OldPassword, model.NewPassword);
                        if (changePassword)
                        {
                            string path = Url.Action("ChangePassword", new { Message = ChangePasswordMessageId.ChangePasswordSuccess });
                            temp = Request.UrlReferrer.ToString();
                            pos = temp.IndexOf("?");
                            if (pos > 0) path += "&" + temp.Substring(pos + 1);
                            return RedirectToLocal(path);    
                       }
                        else
                        {
                            ModelState.AddModelError("", "Change Password failed.");
                        }
                    }
                    catch //(Exception ex)
                    {
                        ModelState.AddModelError("", "Change Password failed.");
                        //ModelState.AddModelError("", ex.Message);
                    }
                }

                // If we got this far, something failed, redisplay form
    //The original query string will be gone. The URLwill now only show
    //https://www.mywebsite.com/Account/ChangePassword
                return View(model);
            }

是否可以称之为"返回视图(模型);" 那么原始查询字符串仍然存在？我需要在页面之间维护查询字符串.除了这个用例之外,我在任何地方都可以使用它.

谢谢!

Answer 1

如果有人仍在寻找此解决方案,请尝试不提供控制器和操作名称.

 @using (Html.BeginForm(null, FormMethod.Post, new { @class = "form-horizontal", role = "form" }))
    {
        @Html.AntiForgeryToken()