asp.net-mvc 如何在 ActionFilterAttribute ASP MVC 5 中为 ViewBag 设置值？
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How to set values to ViewBag in ActionFilterAttribute ASP MVC 5?
提问by Arbejdsgl?de
Hello I would like to create my custom ActionFilterAttribute for each controller in my application, this attribute should set some ViewBag values. Is ActionFilterAttribute would be fine for it and how to get access to viewbag in ActionFilterAttribute ?
您好，我想为应用程序中的每个控制器创建自定义 ActionFilterAttribute，此属性应设置一些 ViewBag 值。ActionFilterAttribute 是否适合它以及如何访问 ActionFilterAttribute 中的 viewbag ？
回答by Ilya
You can do like this
你可以这样做
public class SomeMsgAttribute : FilterAttribute, IResultFilter
{
public void OnResultExecuted(ResultExecutedContext filterContext)
{
}
public void OnResultExecuting(ResultExecutingContext filterContext)
{
filterContext.Controller.ViewBag.Msg= "Hello";
}
}
Using:
使用：
[SomeMsg]
public ActionResult Index()
{
return View();
}
回答by Anto Subash
try this
尝试这个
public class CustomFilterAttribute : ActionFilterAttribute
{
public override void
OnActionExecuting(ActionExecutingContext filterContext)
{
// get the view bag
var viewBag = filterContext.Controller.ViewBag;
// set the viewbag values
viewBag.CustomValue = "CustomValue";
}
}
回答by Arun Prasad E S
To transfer data from a different controller action
从不同的控制器操作传输数据
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
EmployeeTrackingSystemAndMISEntities db = new EmployeeTrackingSystemAndMISEntities();
var UserCookie = filterContext.HttpContext.Request.Cookies["UserUniqueID"];
RouteValueDictionary redirectTargetDictionary = new RouteValueDictionary();
redirectTargetDictionary.Add("action", "UserLogIn");
redirectTargetDictionary.Add("controller", "Login");
var TempData = filterContext.Controller.TempData;
TempData["Status"] = "Please log in as Admin";
filterContext.Result = new RedirectToRouteResult(redirectTargetDictionary);
}
