Receive an error when using "Areas" in MVC 3 - asp.net-mvc-3

I want to define two areas in MVC 3 project
"manager and main areas",
manager have some controles like main areas "the controler's Name in both have similar"
but I have implemented different methods in each controler
when I try to run my project, get this error:
Server Error in '/' Application.
The resource cannot be found.
Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly.
Requested URL: /main/home
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1
When I implement the project without use "Areas". I never get error, but my project is not clean

I'm assuming in your Global.asax in Application_Start you have:
AreaRegistration.RegisterAllAreas();
as one of the first steps yes?
And in the Area/Main folder you have a MainAreaRegistration.cs which is something like the following:
public class MainAreaRegistration : AreaRegistration
{
public override string AreaName
{
get
{
return "Main";
}
}
public override void RegisterArea(AreaRegistrationContext context)
{
context.MapRoute(
"Main_default",
"Main/{controller}/{action}/{id}",
new { controller = "Home", action = "Index", id = UrlParameter.Optional },
new[] { "MyCompany.Web.Areas.Main.Controllers" }
);
}
}
I've found it necessary to fuly qualify routes with their appropriate namespaces (the namespace the controllers live in) once I have multiple areas to avoid confusion also. Obviously the namespace above is just how I structure mine, though whatever namespace your Main area controllers are in, that's the one to put in the file above.
Hope this helps.
Cheers,
Terry

In Global.asax try to change route to:
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = UrlParameter.Optional }, // Parameter defaults
new string[] { "YourNamespace.Controllers" } // ADD THIS
);

Related

Server Error in '/' Application MVC3

im not sure what i messed up, but i just keep getting the following error upon f5.
The resource cannot be found.
Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly.
Requested URL: /
The following is my route, totally default and no changes.
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
);
}
I have checked my project properties -> web tab, "Specific page" has nth. My project has Home folder with Index page.
Other pages are working only after manually inputting URL. For eg: http://localhost:21183/store/search
Thanks
Things to check:
You have a public class named HomeController that derives from Controller.
This HomeController class has a public Index action.
You have a corresponding view ~/Views/Home/Index.cshtml
You are testing this inside a web server which supports extensionless urls. For example this won't work out of the box in IIS 6.0.
Controller:
public class HomeController: Controller
{
public ActionResult Index()
{
return View();
}
}

ASP.NET MVC3 sample project removing home folder

I'm using the ASP.NET MVC3 sample project and would like to have new links added to the page that go directly to the root url
So instead of mydomain.com/Home/About it would do mydomain/About.
This page suggests adding a new route. http://weblogs.asp.net/gunnarpeipman/archive/2011/04/17/asp-net-mvc-defining-short-urls-for-root-level-pages.aspx
Is there another way? Say I have 5 pages that will be on the root do I have to add a special route for each one?
Under the assumption that you are looking to do a bunch of single path requests/respones, and not just redirect home controller actions, then this is an option.
The link you provide is one way to do that. The other is to create 5 controllers using the default route. I'm not sure if I would suggest either is better (due to a lack of what your 5 paths actually are), but they both produce the same out come. If your default route looks like:
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index",
id = UrlParameter.Optional } // Parameter defaults
);
It's basically stating that the default controller is home and the default action is index. These values are not mutually inclusive, meaning that neither required the other in order to be a default value.
Thus you could do:
website.com/about with
public AboutController
{
public ActionResult index()
{
return this.View();
}
}
and/or website.com/people with
public PeopleController
{
public ActionResult index()
{
return this.View();
}
}

Hierarchies in MVC3

Im working my way though an ASP.NET MVC tutorial and couldnt find the answer im looking for.
I understand that each controller class in the 'Controller' root folder is mapped to a Url, so:
****Controller Folder****
|- StoreController.cs
Maps to $url/Store
However, If I wish to creater a 'subfolder'
I.e. a Controller class located for $url/Store/Testing I cant seem to see how I go about it.
I tried deriving a class from StoreController.cs, but that didnt work.
URLs do not necessarily correspond to MVC application internal folder structure. You can use MVC routing tables to conceal the internal structure and redirect specific URLs to any controllers/actions you want. For example, you can create a TestingController.cs class in the Controllers folder and use this route in Global.asax:
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
"Store-Testing", // Route name
"Store/Testing/{action}/{id}", // URL with parameters
new { controller = "Testing", action = "Index", id = UrlParameter.Optional } // Parameter defaults
);
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
);
}
In this case, a request to http://[domain]/Store/Testing will be handled by TestingController.
That url would with the default route point to an action called Testing, within the Store controller.
You can however create your own custom routes in your global.asax file.

Area can't load in MVC - the resource cannot be found

I have a problem. I have a area in MVC 3 called Page that works as it should.
I just added a new Area called Media and now I get "the resource cannot be found" for that new area. I am going crazy, since it looks exactly like the PageArea that works.
Here is the MediaAreaRegistration.cs
public override string AreaName
{
get
{
return "Media";
}
}
public override void RegisterArea(AreaRegistrationContext context)
{
context.MapRoute(
"Media_default",
"{controller}/{action}/{id}",
new { action = "Index", id = UrlParameter.Optional }
);
}
Here is my global.asax
public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
filters.Add(new HandleErrorAttribute());
}
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
);
}
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
RegisterGlobalFilters(GlobalFilters.Filters);
RegisterRoutes(RouteTable.Routes);
}
I am trying to access via localhost/media/, but I am just getting "the resource cannot be found".
Any ideas?
Check the Namespace of the Controller;
In my case; the default route was:
context.MapRoute(
"Admin_default",
"Admin/{controller}/{action}/{id}",
defaults: new {controller = "Home", action = "Index", AreaName="Admin", id = UrlParameter.Optional },
namespaces: new[] { "MyApp.Admin.Controllers"}
);
But when I was create the controller, the MVC automatically set "MyApp.WebUI.Areas.Admin.Controllers" as the namespace of the new Controller; I Changed the namespace to what I defined in default route as "MyApp.Admin.Controllers" and application works fine.
Typically, when you create an area, you will get a somewhat different default route than what is in global.asax. For example, I created a Media area in an MVC3 project, and the default route looks like this:
context.MapRoute(
"Media_default",
"Media/{controller}/{action}/{id}",
new { action = "Index", id = UrlParameter.Optional }
);
Routes in areas are really no different than routes defined in your global asax, except that they look for controllers in a different namespace. Also, they are loaded before the routes in your global.asax. You can see this because in Application_Start, RegisterAllAreas is invoked before RegisterRoutes.
Typically, this is the URL schema for root controllers with routes defined in your global.asax:
base/ControllerAName/Action1Name
base/ControllerAName/Action2Name
base/ControllerBName/Action6Name
...and so on. This is the "convention" you get with MVC out of the box. Look closely, and you will see that this pattern matches the base route definition in your global asax:
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index",
id = UrlParameter.Optional } // Parameter defaults
);
On the other hand, the convention when you use areas is that your "conventional" URL schema will look like this:
base/AreaName/ControllerAName/Action1Name
base/AreaName/ControllerAName/Action2Name
base/AreaName/ControllerBName/Action6Name
Notice the difference? This is why your default route definition in the area registration looks like this: "Media/{controller}/{action}/{id}"
With all of this said, there is nothing stopping you from deviating from the conventions. It sounds like you want to have an area named Media, and a URL base/media that goes to some action method on some controller in the area. If that is correct, try this -- remembering to put your more specific route before the default route generated by MVC:
context.MapRoute(null,
"media",
new { action = "Index", controller = "Media" }
);
context.MapRoute(
"Media_default",
"Media/{controller}/{action}/{id}",
new { action = "Index", id = UrlParameter.Optional }
);
This means that MVC will match base/media to the Index action method on the MediaController in your Media area, since that route is defined first.
Also, when you create a new area, don't change any namespaces. This will only cause you problems.
Another tip is to not give route names to your routes. Notice how I passed null as the first argument. This is considered good practice -- accessing routes by name can get very messy.
I suggest you try starting a new project, or creating a new area, and trying these suggestions. Grasping routes coming from webforms can be tricky, but once you get a handle on it, I think you will find it superior to the URL-TO-FILE mapping in webforms.
In my case, someone added routes.Clear() in RouteConfig.cs, before any area ever existed. But now I added an area, this was erasing all its routes.

Asp.Net MVC 3 - Map a separate route that already belongs to an area

First keep in mind I am new to nop/mvc, and despite my best effort can find no solution to this seemingly simple task.
I have been defining custom routes for a plugin I am making, and so far it's been going fine. Any routes I define have worked without issue (Example, I have set routes for "/Dealerlocator" and "Dealer/List")
The issue comes from the fact that there is an already an area defined for '/Admin", so when I try to set a custom route for something like "Admin/Dealer", from what I can tell my route is being resolved by the area and not my custom route. It looks like my controller is never reached, as it's in a different namespace then the one the area route uses, and I get a "The resource cannot be found." error.
So what I'd like to happen is when I go to "Admin/Dealer", it ignores the route set in the area in this one cause, and uses the route I define in the RouteProvider class.
It was suggested using DataTokens would fix this problem. However I cannot get them to work.
My Plugin routing code:
public partial class RouteProvider : IRouteProvider
{
public void RegisterRoutes(RouteCollection routes)
{
var route = routes.MapRoute(
"Nop.Plugin.Misc.DealersAdmin",
"Admin/Dealer",
new { controller = "DealerAdmin", action = "Index" },
new[] { "Nop.Plugin.Misc.Dealers.Controllers" }
);
route.DataTokens.Add("Area", "Admin");
}
}
Nopcommerce's admin area routing:
public class AdminAreaRegistration : AreaRegistration
{
public override string AreaName
{
get
{
return "Admin";
}
}
public override void RegisterArea(AreaRegistrationContext context)
{
context.MapRoute(
"Admin_default",
"Admin/{controller}/{action}/{id}",
new { controller = "Home", action = "Index", area = "Admin", id = "" },
new[] { "Nop.Admin.Controllers" }
);
}
}
I tried setting a condition on the area registration to not match if the controller is named "Dealer", and that seems to work. But I cannot change the AdminAreaRegistration class as it's part of the core nop framework. I would like to see all the work done in the RouteProvider class. Maybe there is a way to set the priority on my route higher so it is the first one resolved? Thanks.
I have also come across this issue a while back, it is to do with route priority. This post helped me alot.
Regarding your comment - There is no reason why you couldn't do so, but alternatively, you might have more luck defining your route as;
context.MapRoute(
"DealerAdminDefault",
"Dealer/Admin/{action}/{id}",
new { controller = "DealerAdmin", action = "Index", id = UrlParameters.Optional }
);
Hope this helps,
Matt

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