如何使ASP.NET正确路由控制器？

Question

I have this in my controller:

    public ActionResult Details(int? id)
    {
        if(id == null)
        {
            return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
        }

        Sales saleRecord = new Sales();
        var result = saleRecord.GetSalesOrderHeader((int)id);


        return View(result);
    }

However if I browse to /ControllerName/Details/5 I get this error:

"Server Error in '/' Application. - The view 'details' or its master was not found or no view engine supports the searched locations."

The strange thing is that if I use ASP.NET Scaffolding to generate a view, the Details part of that works fine. It's basically the same code I have above as well.

Here's my RouteConfig.cs, if that's relevant:

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

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

So why is that the scaffolding controller works fine, without having anything specific added to RouteConfig, yet my controller Details method is not working?

Answer 1

There should be more detail in error that what locations have been searched. Did you put break point in controller and checked if its being hit?

try

return View((object)result);

instead of

return View(result)

cause its calling overload View(string viewName)

If this doesn't work, try to specify viewName explicitly like this:

return View("ViewName", name);

Additionally, check your folder structure. MVC looks for views (like Index) under the views folder but they also have to be under a folder named after their controller (except partial views).