将TempData从动作过滤器传递到动作

本文介绍了将TempData从动作过滤器传递到动作的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我一直在尝试使用以下命令将TempData从ActionFilter传递到动作:

I've been trying to pass TempData from ActionFilter to the action using :

filterContext.Controller.TempData.Add("Key","Value");

但是，随着我不断收到Object not referenced to an instance of the object错误，似乎没有将TempData传递给该动作.

However, it appears that no TempData is passed to the action as I keep getting the Object not referenced to an instance of the object error.

这是从ActionFilter传递TempData到控制器的正确方法吗?如果没有，我该怎么办?

Is this the right way to pass TempData to the controller from the ActionFilter ? if not, how can I do this ?

推荐答案

这将有效:-

答案1:

过滤器:-

public class MyCustomAttribute : ActionFilterAttribute { public override void OnActionExecuting(ActionExecutingContext filterContext) { filterContext.RouteData.Values.Add("Key","Value"); } }

控制器:-

[MyCustom] public ActionResult Index() { TempData["Key"] = RouteData.Values["Key"]; return View(); }

答案2:

过滤器:-

public class MyCustomAttribute : ActionFilterAttribute { public override void OnActionExecuting(ActionExecutingContext filterContext) { filterContext.Controller.TempData.Add("Key","Value"); } }

控制器:-

[MyCustom] public ViewResult Index() { string Tempval = TempData["Key"].ToString(); return View(); }