Asp.net mvc 在MVC中的HTTPPOST之后返回搜索结果

我有搜索表单要搜索：站点、用户、状态和日期。搜索后，我将拒绝、重新提交或批准调用控制器操作以更新数据库中的状态。我的代码如下：

///视图：

@Html.ValidationMessage("CustomError")

@Html.ValidationSummary（true）

{

///HttpPost动作

[HttpPost, ActionName("POHeader")]
    [MultiButton(MatchFormKey = "action", MatchFormValue = "Reject")]
    public ActionResult Reject(int[] selectedList)
    {
        string var1 = collection["sites"];
        UpdateListStatus(selectedList, "X", "Rejected");
        TempData["CustomError"] = selectedList.Count().ToString() + " record(s) has been successfully " + ActionString + "!";
       return RedirectToAction("POHeader", new { IsRedirectAction = true });

    }

问题：如何获取搜索值？ 1.我是否需要在HTTPPost操作中再次传递所有参数？（有更好的解决方法吗？） 2.CustomError消息不起作用。（在下一次搜索完成后显示消息）

谢谢，

---

Si Thu

首先，我会将视图绑定到一个模型。通过这样做，您可以将整个模型传递回您的方法，然后如果表单出现问题，您需要使用值再次显示它，您只需返回视图以及发送的模型

[HttpPost]
public ActionResult POHeader(FormModel model)
{
   if (ModelState.IsValid)
   {
      // Do whatever you want to do and redirect to wherever you want to go from here.
   }

   // If the Model is invalid then simply return back the view along with the invalid model.
   return View(model)
}

有关模型绑定的更多信息，请参阅下面的文章

下面是另一篇关于客户端模型验证的文章

// HTTP Get
public ActionResult POHeader(string sites, string user, string department,
        string status, string PONumber, string TransactionDate, bool IsRedirectAction = false)
    {


        // Populate Dropdown List 
        GetSiteDropdownList(SiteId);
        GetUserDropdownList(UserId);
        GetDepartmentDropdownList(DepartmentId);
        GetStatusDropdownList(StatusId);


            var PO = from p in db.X_PO_HDR
                 select p;

            // Get Selected Site
            if ((!string.IsNullOrEmpty(sites)) || ((TempData["selectedsite"] != null)))
            {
                if (sites.Length > 0)
                {
                    if (IsRedirectAction)
                    {
                        SiteId = (string)TempData["selectedsite"];
                        //sites = SiteId;
                    }
                    else
                    {
                        SiteId = sites;
                        TempData["selectedsite"] = SiteId;
                    }

                    // Get Selected Site
                    PO = PO.Where(p => p.Site_Id == SiteId);
                }
            }

            if (!string.IsNullOrEmpty(user) || ((TempData["selectedUser"] != null)))
            {
                if (user.Length > 0)
                {
                    if (IsRedirectAction)
                    {
                        UserId = (string)TempData["selectedUser"];
                    }
                    else
                    {
                        UserId = user;
                        TempData["selectedUser"] = UserId;
                    }

                    // Filter by User
                    PO = PO.Where(p => p.Created_By == UserId);
                }
            }

            // Get Selected Department            
            if (!string.IsNullOrEmpty(department) || ((TempData["selectedDepartment"] != null)))
            {
                if (department.Length > 0)
                {
                    if (IsRedirectAction)
                    {
                        DepartmentId = (string)TempData["selectedDepartment"];
                    }
                    else
                    {
                        DepartmentId = department;
                        TempData["selectedDepartment"] = DepartmentId;
                    }

                    // Filter by Department
                    PO = PO.Where(p => p.Purch_Dept == DepartmentId);
                }
            }

            PO = PO.OrderBy(o => o.Txn_DT);

            // check if TempData contains some error message and if yes add to the model state.
            if (TempData["CustomError"] != null)
            {
                ModelState.AddModelError(string.Empty, TempData["CustomError"].ToString());
            }

            return View(PO.ToList());

    }

[HttpPost, ActionName("POHeader")]
    [MultiButton(MatchFormKey = "action", MatchFormValue = "Reject")]
    public ActionResult Reject(int[] selectedList)
    {
        string var1 = collection["sites"];
        UpdateListStatus(selectedList, "X", "Rejected");
        TempData["CustomError"] = selectedList.Count().ToString() + " record(s) has been successfully " + ActionString + "!";
       return RedirectToAction("POHeader", new { IsRedirectAction = true });

    }

[HttpPost]
public ActionResult POHeader(FormModel model)
{
   if (ModelState.IsValid)
   {
      // Do whatever you want to do and redirect to wherever you want to go from here.
   }

   // If the Model is invalid then simply return back the view along with the invalid model.
   return View(model)
}