MVC控制器动作参数为null [英] MVC Controller Action Parameter is null

问题描述

我有控制器名称：区和动作名称：Incharges但我想要的网址是这样（有一些paremeter动作名称）

www.example.com/district/incharges/aaa

www.example.com/district/incharges/bbb

www.example.com/district/incharges/ccc

不过，在调试teamName总是在行动参数返回为NULL。

路由

  routes.MapRoute（
                名称：默认，
                网址：{控制器} / {行动} / {ID}
                默认：新{控制器=家，行动=索引，ID = UrlParameter.Optional}
            ）;            routes.MapRoute（
            DistrictDetails
            区/ Incharges / {} teamName
            新{控制器=区，行动=Incharges}
            ）;
 

控制器

不过，在调试teamName总是在行动参数返回为NULL。

 公共类DistrictController：控制器
    {
        公众的ActionResult Incharges（字符串teamName）
        {
            Incharge presentationVM INPVM =新Incharge presentationVM（）;
            INPVM.InitializePath（teamName，的String.Empty）;
            返回视图（，INPVM）;
        }
}
 

查看

  @ {
    ViewBag.Title =指数;
}＆LT; H2＆GT;指数关于＆LT; / H＆GT;
 

解决方案

具体路线，你必须声明的第一个

  routes.MapRoute（
            DistrictDetails
            区/ Incharges / {} teamName
            新{控制器=区，行动=Incharges，ID = UrlParameter.Optional}routes.MapRoute（
                名称：默认，
                网址：{控制器} / {行动} / {ID}
                默认：新{控制器=家，行动=索引，ID = UrlParameter.Optional}
            ））;
 

I have Controller name: District and Action name: Incharges But I want the URL to be like this (action name with some paremeter)

www.example.com/district/incharges/aaa

www.example.com/district/incharges/bbb

www.example.com/district/incharges/ccc

But, while debugging teamName always return as NULL in the action parameter.

Routing

routes.MapRoute(
                name: "Default",
                url: "{controller}/{action}/{id}",
                defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
            );

            routes.MapRoute(
            "DistrictDetails",
            "District/Incharges/{teamName}",
            new { controller = "District", action = "Incharges" }
            ); 

Controller

But, while debugging teamName always return as NULL in the action parameter.

public class DistrictController : Controller
    {     


        public ActionResult Incharges(string teamName)
        {
            InchargePresentationVM INPVM = new InchargePresentationVM();
            INPVM.InitializePath(teamName, string.Empty);
            return View("", INPVM);
        }
}

View

@{
    ViewBag.Title = "Index";
}

<h2>Index About</h2>

解决方案

specific route you have to declare the first

routes.MapRoute(
            "DistrictDetails",
            "District/Incharges/{teamName}",
            new { controller = "District", action = "Incharges", id = UrlParameter.Optional }

routes.MapRoute(
                name: "Default",
                url: "{controller}/{action}/{id}",
                defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
            );); 

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