如果会话在mvc中到期，则从ActionFilter显示弹出窗口(Show popup from ActionFilter if session expires in mvc)

 我们使用mvc创建了一个网站，其中我有3个控制器： 
 
AccountController
HomeController
ContactController
 
 我们在ActionFilters中编写了自定义授权，我们正在检查会话是否已过期。 如果会话到期，我们将重定向到登录页面。 这是ActionFilter中的代码： 
 
public override void OnAuthorization(AuthorizationContext filterContext)
        {
            var user = filterContext.HttpContext.User;
            var UserProcesses = HttpContext.Current.Session["UserProcesses"] != null ? ((List<string>)HttpContext.Current.Session["UserProcesses"]) : null;
            var currentRequest = filterContext.ActionDescriptor.ActionName.ToLower();
            var currentController = filterContext.RouteData.Values["controller"].ToString();
            if (!string.IsNullOrEmpty(currentController))
            {
                switch (currentController.ToLower())
                {
                    case "home":
                        {
                            if (UserProcesses == null)
                            {
                                filterContext.Result = new RedirectToRouteResult(
                                        new RouteValueDictionary(
                                            new
                                            {
                                                Controller = "Account",
                                                Action = "Login"
                                            })
                                        );
                            }
                break;
         case "contact":
                        {

                            if (UserProcesses == null)
                            {
                filterContext.Result = new RedirectToRouteResult(
                                        new RouteValueDictionary(
                                            new
                                            {
                                                Controller = "Account",
                                                Action = "Login"
                                            })
                                        );
                            }
                break;

            }
        }
    }
 
 这很有效，即当会话到期并且用户点击网站上的任何链接时，他被重定向到登录页面，其地址是 
 
http://websitename/Account/Login
 
 但现在我们想要在页面上显示弹出窗口（用户所在的任何页面），这将显示消息“该会话已过期”，并且在解除该弹出窗口时，用户将被重定向到登录页面。 
 
 我无法弄清楚如何从ActionFilter本身调用Jquery弹出窗口。 我在网上搜索了很多解决方案，但找不到正确的解决方案。 有人建议使用HandleUnauthorizedRequest来调用Action方法（ 从ActionFilter调用RedirectToAction ）。 但是我很困惑是否只使用HandleUnauthorizedRequest或在我的代码中使用this和OnAuthorization 。 有人可以建议一个解决方案？ 
 
 注意：我有一个共同的视图，其中我可以保持html弹出窗口在整个网站上使用。 

We have created a website using mvc where in I have 3 controllers:
 
AccountController
HomeController
ContactController
 
We have written custom Authorization in the ActionFilters wherein we are checking whether the session has expired or not. If the session expires we are redirecting to the login page. This is the code in the ActionFilter:
 
public override void OnAuthorization(AuthorizationContext filterContext)
        {
            var user = filterContext.HttpContext.User;
            var UserProcesses = HttpContext.Current.Session["UserProcesses"] != null ? ((List<string>)HttpContext.Current.Session["UserProcesses"]) : null;
            var currentRequest = filterContext.ActionDescriptor.ActionName.ToLower();
            var currentController = filterContext.RouteData.Values["controller"].ToString();
            if (!string.IsNullOrEmpty(currentController))
            {
                switch (currentController.ToLower())
                {
                    case "home":
                        {
                            if (UserProcesses == null)
                            {
                                filterContext.Result = new RedirectToRouteResult(
                                        new RouteValueDictionary(
                                            new
                                            {
                                                Controller = "Account",
                                                Action = "Login"
                                            })
                                        );
                            }
                break;
         case "contact":
                        {

                            if (UserProcesses == null)
                            {
                filterContext.Result = new RedirectToRouteResult(
                                        new RouteValueDictionary(
                                            new
                                            {
                                                Controller = "Account",
                                                Action = "Login"
                                            })
                                        );
                            }
                break;

            }
        }
    }
 
This works perfectly i.e. when the session expires and the user clicks on any link on the website, he is redirected to the login page the address of which is 
 
http://websitename/Account/Login
 
But now we want to display a popup on the page(whatever page the user is in) which will show the message "That session has expired" and on dismissing that popup, the user is then redirected to the login page. 
 
I am unable to figure out how to call a Jquery popup from the ActionFilter itself. I have searched through many solutions on the web but couldn't find the correct solution to this. Some one suggested to use HandleUnauthorizedRequest to call an Action method (Call RedirectToAction from ActionFilter). However I am confused whether to use only HandleUnauthorizedRequest or use both this and OnAuthorization in my code. Can someone please suggest a solution?
 
Note: I have a common View wherein I can keep the html for popup to be used across the website.

原文：https://stackoverflow.com/questions/32651699