asp.net-mvc c# razor url 参数视图
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c# razor url parameter from view
提问by Shaokan
Why does Request["parameterName"]returns null within the view? I know I can get it from the controller but I have to make a little check in the View. I am using ASP.NET MVC 3.
为什么Request["parameterName"]在视图中返回 null？我知道我可以从控制器获取它，但我必须在视图中进行一些检查。我正在使用 ASP.NET MVC 3。
回答by Wouter Simons
You can use the following:
您可以使用以下内容：
Request.Params["paramName"]
回答by Daniel
I've found the solution in this thread
我在这个线程中找到了解决方案
@(ViewContext.RouteData.Values["parameterName"])
回答by Ravi Ram
@(ViewContext.RouteData.Values["parameterName"])
worked with ROUTE PARAM.
与 ROUTE PARAM 合作。
Request.Params["paramName"]
did not work with ROUTE PARAM.
不适用于 ROUTE PARAM。
回答by Jamie Dixon
If you're doing the check inside the View, put the value in the ViewBag.
如果您在 View 中进行检查，请将值放入ViewBag.
In your controller:
在您的控制器中：
ViewBag["parameterName"] = Request["parameterName"];
It's worth noting that the Requestand Responseproperties are exposed by the Controllerclass. They have the same semantics as HttpRequestand HttpResponse.
值得注意的是，Request和Response属性由Controller类公开。它们与HttpRequest和具有相同的语义HttpResponse。
