RegisterRoutes 注册路由示例配置：

public static void RegisterRoutes(RouteCollection routes){    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");    routes.MapRoute(        name: "default",        url: "controller/{id}.htm",        defaults: new { controller = "Home", action = "Index" });}

Controller 示例代码

public class HomeController : Controller{    // GET: Home    public ActionResult Index(int id)    {        return View();    }}

解决方式在 Web.config 中添加如下配置：