实现MVC4多级Views目录

建立自己MyViewEngine类让他继承RazorViewEngine，之后在构造函数里面写入设置视图位置格式代码如下:

public class MyViewEngine : RazorViewEngine
{
    public MyViewEngine()
    {
        ViewLocationFormats = new[]
        {
            "~/Views/{1}/{0}.cshtml",
            "~/Views/Shared/{0}.cshtml",
            "~/Views/UserInfo/{1}/{0}.cshtml",//UserInfo为Controllers控制器下的文件夹            
            "~/Views/Admin/{1}/{0}.cshtml"//Admin为Controllers控制器下的文件夹
            //可以一直往下添            
            //注：{1}表示Controller的名称，{0}表示视图名称
        };
    }
}    

进入默认RouteConfig类里面添加路由配置添加如下代码：

public static void RegisterRoutes(RouteCollection routes)
{
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

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

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

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

在Global下的Application_Start注册你添加你的CustomViewEngine类代码如下：

public class MvcApplication : System.Web.HttpApplication
{
    protected void Application_Start()
    {
        AreaRegistration.RegisterAllAreas();
        WebApiConfig.Register(GlobalConfiguration.Configuration);
        FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
        RouteConfig.RegisterRoutes(RouteTable.Routes);
        BundleConfig.RegisterBundles(BundleTable.Bundles);

        RegisterView();//注册视图访问规则
    }

    protected void RegisterView()
    {
        ViewEngines.Engines.Clear();//移除默认视图配置
        ViewEngines.Engines.Add(new FirstMVC.Models.MyViewEngine());//注册自己编写的视图格式
    }
}