asp.net-mvc – 如何确定视图是否为ASP.NET MVC中的GET或POST？

[httpGet] 
 public ActionResult Index()
 {
    ViewBag.message = "message";
    return View();
 }

 [httpPost]
 public ActionResult Index(decimal a,decimal b,String operation)
 {
     ViewBag.message = "Calculation Result:";
     ViewBag.Result = Calculation.Execute(a,b,operation);
     return View();
 }

在MVC视图中，如何确定视图是否为http get或http post？

在意见中是IsPost

@{
     var message="";
     if(IsPost)
      {
            message ="This is from the postBACk";
      }
       else
    {
            message="This is without postBACk";
    }
}