如何在 MVC 项目中的会话过期后重定向到同一页面？

Question

    //I Have a Action Method 
    [HttpGet]
    public ActionResult Login()
    {
        return View();
    }
    [HttpPost]
    public ActionResult Login(VmUser_User VmUser_User)
    {
        if (VmUser_User.User_User.UserName == null || 
        VmUser_User.User_User.Password == null)
        {
            VmUser_User.LblError = "Please enter Username and Password";
            return View(VmUser_User);
        }
        //Return valid user
        if (VmUser_User.LoginUser() > 0)
        {

            Session["One"] = VmUser_User;
            return RedirectToAction("Index", "Home");

        }
        else
        {
            VmUser_User.LblError = "User/Password does not match!";
        }

        return View(VmUser_User);
    }

   //And another Action Method
    public async Task<ActionResult> Common_Unit()
    {
        Oss.Romo.ViewModels.User.VmUser_User user = 
        (Oss.Romo.ViewModels.User.VmUser_User)Session["One"];
        if (user == null)
        {
            return RedirectToAction("Login", "Home");
        }
        vmCommon_Unit = new VmCommon_Unit();
        await Task.Run(() => vmCommon_Unit.InitialDataLoad());

        return View(vmCommon_Unit);
    } 

当一个有效的用户登录应用程序时，它会重定向到 Home/Index 页面，然后他请求 Common/Common_Unit 页面。会话到期后，用户重新登录我想在最后请求的页面（如 Common/Common_Unit）中重定向的应用程序，请有人帮我解决这个问题。

我的问题：当授权用户浏览特定页面时，他会在一段时间内处于非活动状态。在最短时间会话结束，用户进入登录页面。登录后，我想在此特定页面上重定向用户。对不起我的英语不好

Answer 1

尝试使用ReturnUrl参数，像这样：

    [HttpGet]
    public ActionResult Login()
    {
        return View();
    }
    [HttpPost]
    public ActionResult Login(VmUser_User VmUser_User)
    {
        if (VmUser_User.User_User.UserName == null ||
        VmUser_User.User_User.Password == null)
        {
            VmUser_User.LblError = "Please enter Username and Password";
            return View(VmUser_User);
        }
        //Return valid user
        if (VmUser_User.LoginUser() > 0)
        {

            Session["One"] = VmUser_User;

            if (Request.QueryString["ReturnUrl"] != null & Request.QueryString["ReturnUrl"] != "")
            {
                Response.Redirect(Request.QueryString["ReturnUrl"]);
            }
            else
            {
                return RedirectToAction("Index", "Home");
            }

        }
        else
        {
            VmUser_User.LblError = "User/Password does not match!";
        }

        return View(VmUser_User);
    }

    //And another Action Method
    public async Task<ActionResult> Common_Unit()
    {
        Oss.Romo.ViewModels.User.VmUser_User user =
        (Oss.Romo.ViewModels.User.VmUser_User)Session["One"];
        if (user == null)
        {
            return RedirectToAction("Login", "Home", new { ReturnUrl = "/Common/Common_Unit" });
        }
        vmCommon_Unit = new VmCommon_Unit();
        await Task.Run(() => vmCommon_Unit.InitialDataLoad());

        return View(vmCommon_Unit);
    }