ASP.NET MVC Route Basic

When the application first starts up (i.e., when Application_Start() runs), this code
populates a global static RouteCollection object called RouteTable.Routes. That’s where the
application’s routing configuration lives.

MapRoute() adds an entry to the routing configuration.

正常写法：

routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = "" } // Parameter defaults
);

等价于：

Route myRoute = new Route("{controller}/{action}/{id}", new MvcRouteHandler())
{
Defaults = new RouteValueDictionary( new {
controller = "Home", action = "Index", id = ""
})
};
routes.Add("Default", myRoute);