为此,您可以创建自定义属性,如下所示：

这是覆盖ActionFilterAttribute的类.

public class SessionExpireAttribute : ActionFilterAttribute
    {
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            HttpContext ctx = HttpContext.Current;
            // check  sessions here
            if( HttpContext.Current.Session["username"] == null ) 
            {
               filterContext.Result = new RedirectResult("~/Home/Index");
               return;
            }
            base.OnActionExecuting(filterContext);
        }
    }

然后在操作中只需添加如下所示的属性：

[SessionExpire]
public ActionResult Index()
{
     return Index();
}

或者只需添加一次属性：

[SessionExpire]
public class HomeController : Controller
{
  public ActionResult Index()
  {
     return Index();
  }
}