MVC專案中時，寫一個基類來判斷session是否已過期然後跳轉到指定的錯誤頁面或者登陸介面，然後讓所有的頁面都繼承這個基類,這種方法是並不會起作用的。所以我百度了一下，進行了總結。

using System.Web;
using System.Web.Mvc;
using System.Web.WebPages;

namespace EHR.Controllers
{

    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = true, Inherited = true)]
    public
 
 class AuthenticatedFilterAttribute : ActionFilterAttribute
    {
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            if (filterContext.HttpContext.Session["key"] == null || filterContext.HttpContext.Session["key"] == "")
            {
                GoUrl(filterContext);
            }
        }
        private
 
 static void GoUrl(ActionExecutingContext filterContext)
        {
            filterContext.Result = new RedirectToRouteResult("Default", new System.Web.Routing.RouteValueDictionary(new
            {
                action = "Index",
                controller = "Login"
            }));
        }

    }
}
 

然後在每個方法前面呼叫該方法:

 [AuthenticatedFilter]
        public ActionResult otherInAffair(string parentId, string currentId)
        {
          return View();
        }