Question

如果Request在System.Web.Mav命名空间内，在Controller类中（参见下面的F12自动生成结构），为什么我无法用完全限定名称

来引用它

System.Web.Mvc.Controller.Request.Browser`

namespace System.Web.Mvc
{
    public abstract class Controller : ControllerBase, IActionFilter, IAuthorizationFilter, IDisposable, IExceptionFilter, IResultFilter, IAsyncController, IController, IAsyncManagerContainer
    {
        protected Controller();
        ....
        public HttpRequestBase Request { get; }
        ....
    }
}

我正在使用Microsoft Visual Studio Ultimate 2013和C＃谢谢！

Answer 1

这是因为此Request属性是Controller的实例属性，而不是静态属性。

public class MyController : Controller
{
    public ActionResult MyAction()
    {
        //you can access this.Request.Browser 
        //because "this" gives an instance of Controller

        //you can't use System.Web.Mvc.Controller.Request.Browser 
        //because "Request" is not a static property of "Controller"
    }
}

为简化起见，请考虑以下事项：

class Person
{
    public string Name { get; }
}

//Person.Name   -> invalid, "Name" property is not static
//new Person().Name    -> valid, "Name" property is access via an instance of "Person"

引用具有完全限定名称MVC的Request.Browser

1 个答案: