Rectangle 27 22

public static void RegisterRoutes(RouteCollection routes)
{
 routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
 routes.MapRoute(
 name: "Default",
 url: "{controller}/{action}/{id}",
 defaults: new { controller = "Account", action = "Login", id = UrlParameter.Optional });
}

IF still not working then do below steps

Second Way : You simple follow below steps,

3) Select Web option and then Select Specific Page (Controller/View) and then set your login page

Your "second way" is about what happens when you debug your web project. It has nothing to do with the "default controller", i.e. what page is shown when you navigate to the landing page of your site.

c# - How to set Default Controller in asp.net MVC 4 & MVC 5 - Stack Ov...

c# asp.net asp.net-mvc asp.net-mvc-4 asp.net-mvc-5
Rectangle 27 20

public static void RegisterRoutes(RouteCollection routes)
{
 routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
 routes.MapRoute(
 name: "Default",
 url: "{controller}/{action}/{id}",
 defaults: new { controller = "Account", action = "Login", id = UrlParameter.Optional });
}

IF still not working then do below steps

Second Way : You simple follow below steps,

3) Select Web option and then Select Specific Page (Controller/View) and then set your login page

Your "second way" is about what happens when you debug your web project. It has nothing to do with the "default controller", i.e. what page is shown when you navigate to the landing page of your site.

c# - How to set Default Controller in asp.net MVC 4 & MVC 5 - Stack Ov...

c# asp.net asp.net-mvc asp.net-mvc-4 asp.net-mvc-5
Rectangle 27 27

Move your Dashboard route in front of the Default route:

routes.MapRoute(
    "Dashboard",
    "Dashboard/{action}",
    new { controller = "Dashboard", action = "Summary" }
);

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

The order of routes changes everything. Also, notice the changes I made to the Dashboard route. The first parameter is the name of the route. Second is the URL, which match URLs that start with Dashboard, and allows for other actions in your Dashboard controller. As you can see, it will default to the Summary action.

c# - Set default action (instead of index) for controller in ASP.NET M...

c# asp.net-mvc asp.net-mvc-3 routes asp.net-mvc-routing
Rectangle 27 23

How should I setup a default Area when the application starts?

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

great question, why don't you create it as one?

What is an 'Area'? If I define a View, is the referenced layout loaded, and then a separate HTTP request with my view data? (i.e. separate Ajax operation) or is the layout rendered and wrapped around my view?

@GusCrawford What is an 'Area'? From msdn.microsoft.com/en-us/library/ee671793(VS.100).aspx: To accommodate large projects, ASP.NET MVC lets you partition Web applications into smaller units that are referred to as areas. Areas provide a way to separate a large MVC Web application into smaller functional groupings. An area is effectively an MVC structure inside an application. An application could contain several MVC structures (areas).

As for the other question, I don't think it's related to this answer, and it doesn't seem relevant even to the original question. May be, you should post it somewhere else.

Ill ask separately in a new thread reply thanks for the perspective.

c# - How to set Default Controller in asp.net MVC 4 & MVC 5 - Stack Ov...

c# asp.net asp.net-mvc asp.net-mvc-4 asp.net-mvc-5
Rectangle 27 23

How should I setup a default Area when the application starts?

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

great question, why don't you create it as one?

What is an 'Area'? If I define a View, is the referenced layout loaded, and then a separate HTTP request with my view data? (i.e. separate Ajax operation) or is the layout rendered and wrapped around my view?

@GusCrawford What is an 'Area'? From msdn.microsoft.com/en-us/library/ee671793(VS.100).aspx: To accommodate large projects, ASP.NET MVC lets you partition Web applications into smaller units that are referred to as areas. Areas provide a way to separate a large MVC Web application into smaller functional groupings. An area is effectively an MVC structure inside an application. An application could contain several MVC structures (areas).

As for the other question, I don't think it's related to this answer, and it doesn't seem relevant even to the original question. May be, you should post it somewhere else.

Ill ask separately in a new thread reply thanks for the perspective.

c# - How to set Default Controller in asp.net MVC 4 & MVC 5 - Stack Ov...

c# asp.net asp.net-mvc asp.net-mvc-4 asp.net-mvc-5
Rectangle 27 4

You need to declare the "Default" catch-all route last.

c# - Set default action (instead of index) for controller in ASP.NET M...

c# asp.net-mvc asp.net-mvc-3 routes asp.net-mvc-routing
Rectangle 27 14

Its not right to set default value in View. The View should perform disply work, not more. This action breaks ideology of MVC pattern. So the right place to set defaults - create method of controller class.

I want to change the format of a datetime value (dd/MM/yyyy mm:HH:ss) to (yyyy/MM/dd)

c# - Html.EditorFor Set Default Value - Stack Overflow

c# asp.net-mvc asp.net-mvc-3
Rectangle 27 14

Its not right to set default value in View. The View should perform display work, not more. This action breaks ideology of MVC pattern. So the right place to set defaults - create method of controller class.

I want to change the format of a datetime value (dd/MM/yyyy mm:HH:ss) to (yyyy/MM/dd)

c# - Html.EditorFor Set Default Value - Stack Overflow

c# asp.net-mvc asp.net-mvc-3
Rectangle 27 93

Your routing needs to be set up along the lines of {controller}/{action}/{firstItem}. If you left the routing as the default {controller}/{action}/{id} in your global.asax.cs file, then you will need to pass in id.

routes.MapRoute(
    "Inventory",
    "Inventory/{action}/{firstItem}",
    new { controller = "Inventory", action = "ListAll", firstItem = "" }
);

Plus it world be wise to add a constraints object to the MapRoute, like so: new { firstItem = @"\d" }. This way it will only accept if the parameter is any kind of number. You can modify the regex as you like, and even limit the number of decimals, like this: new { firstItem = @"\d{4}" } - now it can only be 4 numbers long. Edit: example of fully modified MapRoute: jsfiddle.net/HJRgT

c# - ASP.NET MVC - passing parameters to the controller - Stack Overf...

c# asp.net-mvc
Rectangle 27 93

Your routing needs to be set up along the lines of {controller}/{action}/{firstItem}. If you left the routing as the default {controller}/{action}/{id} in your global.asax.cs file, then you will need to pass in id.

routes.MapRoute(
    "Inventory",
    "Inventory/{action}/{firstItem}",
    new { controller = "Inventory", action = "ListAll", firstItem = "" }
);

Plus it world be wise to add a constraints object to the MapRoute, like so: new { firstItem = @"\d" }. This way it will only accept if the parameter is any kind of number. You can modify the regex as you like, and even limit the number of decimals, like this: new { firstItem = @"\d{4}" } - now it can only be 4 numbers long. Edit: example of fully modified MapRoute: jsfiddle.net/HJRgT

c# - ASP.NET MVC - passing parameters to the controller - Stack Overf...

c# asp.net-mvc
Rectangle 27 5

When you created your area, did MVC not create the [AreaName]AreaRegistration class under the Areas/[AreaName] folder? In there you will find the area registration that looks similar to this. Modify the controller = portion of the defaults parameter to the controller name (Login) you want to use by default:

public override void RegisterArea(AreaRegistrationContext context)
    {
        context.MapRoute(
            "Login_default",
            "Login/{controller}/{action}/{id}",
            new { controller = "Login", action = "Index", id = UrlParameter.Optional }
        );
    }

That controller was the problem, thanks.

c# - How do I get ASP.NET MVC to set a default Controller and Action f...

c# asp.net-mvc routing areas
Rectangle 27 5

When you created your area, did MVC not create the [AreaName]AreaRegistration class under the Areas/[AreaName] folder? In there you will find the area registration that looks similar to this. Modify the controller = portion of the defaults parameter to the controller name (Login) you want to use by default:

public override void RegisterArea(AreaRegistrationContext context)
    {
        context.MapRoute(
            "Login_default",
            "Login/{controller}/{action}/{id}",
            new { controller = "Login", action = "Index", id = UrlParameter.Optional }
        );
    }

That controller was the problem, thanks.

c# - How do I get ASP.NET MVC to set a default Controller and Action f...

c# asp.net-mvc routing areas
Rectangle 27 33

Why font-awesome works on debug mode but not on IIS?

This is because their build action is set to None, this is by default (on MVC, not sure on WebForms). You must go to the affected file's properties and set it from "None" to "Content".

This is how I solved it (not by manually dragging the files as some may suggest)

glad to be of help :)

those files are set to Content by default but glad it helped other people. It is also not font-awesome specific but rather to the files extensions

I tried everything else and was happily surprised that this was the correct answer. Thanks, never even crossed my mind that this was an issue to be aware off. Again thanks.

asp.net mvc - Why font-awesome works on localhost but not on web ? - S...

asp.net-mvc font-awesome
Rectangle 27 18

While you can have a default page in the MVC project, the more conventional implementation for a default view would be to use a default controller, implememented in the global.asax, through the 'RegisterRoutes(...)' method. For instance if you wanted your Public\Home controller to be your default route/view, the code would be:

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

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

    }

For this to be functional, you are required to have have a set Start Page in the project.

How do you set the startup page for debugging in an ASP.NET MVC applic...

asp.net-mvc
Rectangle 27 2

If you decorate your HomeController (or really, all of your controllers that require someone to be logged in) with the [Authorize] attribute, ASP.NET MVC will automatically redirect people to the login screen if they are not logged in.

[Authorize]
public ActionResult Home()
{
}

I put login here as an example. My main question is how to set routing to start some controller as a default if that controller is in area.

c# - How do I get ASP.NET MVC to set a default Controller and Action f...

c# asp.net-mvc routing areas
Rectangle 27 2

If you decorate your HomeController (or really, all of your controllers that require someone to be logged in) with the [Authorize] attribute, ASP.NET MVC will automatically redirect people to the login screen if they are not logged in.

[Authorize]
public ActionResult Home()
{
}

I put login here as an example. My main question is how to set routing to start some controller as a default if that controller is in area.

c# - How do I get ASP.NET MVC to set a default Controller and Action f...

c# asp.net-mvc routing areas
Rectangle 27 4

You have to set the route configuration like this by fixing your route for each of your controllers otherwise the default route configuration will be called for that kind of scenario as you mentioned above and the route will become like this.

This route will work only for blog controller as we have fixed our route in this configuration.

You have to manually do this for each of your controllers for the Forum as well and the resultant route will only work for forum controller.

routes.MapRoute(
        name: "Forum",
        url: "forum/{v1}/{v2}/{v3}/{v4}",
        defaults: new
        {
            controller = "Forum",
            action = "searchForum",
            v1 = UrlParameter.Optional,
            v2 = UrlParameter.Optional,
            v3 = UrlParameter.Optional,
            v4 = UrlParameter.Optional
        });

You cannot have multiple optional parameters. Only the last parameter can be UrlParameter.Optional (the routing engine has no way of matching up values if only 1 or 2 or 3 parameters are provided so they are converted to query string values, not route values. Remove UrlParameter.Optional from all but the last parameter.

@Stephen yes, its the point, but my need is only query string values overall the url. thanks for your point.

c# - MVC routing with one fixed action and controllers with multiple o...

c# asp.net-mvc asp.net-mvc-routing
Rectangle 27 3

As I understand it, .MapRoute doesn't allow you to specify an area *However it is possible to alter the DataTokens in MVC6 *, otherwise it would be super easy, however the route that is returned can be altered to have the area.

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

Also you need to make sure to register your areas first, so don't change the order of your Application_Start in the Global.ascx.cs. This needs to be first:

AreaRegistration.RegisterAllAreas();

An alternative is to override the View Engine which I have seen in an answer somewhere but looks a bit complicated.

DataTokens

ASP.NET MVC How to Set a controller in a Area as a Default controller?...

asp.net-mvc asp.net-mvc-4 asp.net-mvc-routing asp.net-mvc-areas
Rectangle 27 92

This one interested me, and I finally had a chance to look into it. Other folks apparently haven't understood that this is an issue with finding the view, not an issue with the routing itself - and that's probably because your question title indicates that it's about routing.

In any case, because this is a View-related issue, the only way to get what you want is to override the default view engine. Normally, when you do this, it's for the simple purpose of switching your view engine (i.e. to Spark, NHaml, etc.). In this case, it's not the View-creation logic we need to override, but the FindPartialView and FindView methods in the VirtualPathProviderViewEngine class.

You can thank your lucky stars that these methods are in fact virtual, because everything else in the VirtualPathProviderViewEngine is not even accessible - it's private, and that makes it very annoying to override the find logic because you have to basically rewrite half of the code that's already been written if you want it to play nice with the location cache and the location formats. After some digging in Reflector I finally managed to come up with a working solution.

What I've done here is to first create an abstract AreaAwareViewEngine that derives directly from VirtualPathProviderViewEngine instead of WebFormViewEngine. I did this so that if you want to create Spark views instead (or whatever), you can still use this class as the base type.

The code below is pretty long-winded, so to give you a quick summary of what it actually does: It lets you put a {2} into the location format, which corresponds to the area name, the same way {1} corresponds to the controller name. That's it! That's what we had to write all this code for:

public abstract class BaseAreaAwareViewEngine : VirtualPathProviderViewEngine
{
    private static readonly string[] EmptyLocations = { };

    public override ViewEngineResult FindView(
        ControllerContext controllerContext, string viewName,
        string masterName, bool useCache)
    {
        if (controllerContext == null)
        {
            throw new ArgumentNullException("controllerContext");
        }
        if (string.IsNullOrEmpty(viewName))
        {
            throw new ArgumentNullException(viewName,
                "Value cannot be null or empty.");
        }

        string area = getArea(controllerContext);
        return FindAreaView(controllerContext, area, viewName,
            masterName, useCache);
    }

    public override ViewEngineResult FindPartialView(
        ControllerContext controllerContext, string partialViewName,
        bool useCache)
    {
        if (controllerContext == null)
        {
            throw new ArgumentNullException("controllerContext");
        }
        if (string.IsNullOrEmpty(partialViewName))
        {
            throw new ArgumentNullException(partialViewName,
                "Value cannot be null or empty.");
        }

        string area = getArea(controllerContext);
        return FindAreaPartialView(controllerContext, area,
            partialViewName, useCache);
    }

    protected virtual ViewEngineResult FindAreaView(
        ControllerContext controllerContext, string areaName, string viewName,
        string masterName, bool useCache)
    {
        string controllerName =
            controllerContext.RouteData.GetRequiredString("controller");
        string[] searchedViewPaths;
        string viewPath = GetPath(controllerContext, ViewLocationFormats,
            "ViewLocationFormats", viewName, controllerName, areaName, "View",
            useCache, out searchedViewPaths);
        string[] searchedMasterPaths;
        string masterPath = GetPath(controllerContext, MasterLocationFormats,
            "MasterLocationFormats", masterName, controllerName, areaName,
            "Master", useCache, out searchedMasterPaths);
        if (!string.IsNullOrEmpty(viewPath) &&
            (!string.IsNullOrEmpty(masterPath) || 
              string.IsNullOrEmpty(masterName)))
        {
            return new ViewEngineResult(CreateView(controllerContext, viewPath,
                masterPath), this);
        }
        return new ViewEngineResult(
            searchedViewPaths.Union<string>(searchedMasterPaths));
    }

    protected virtual ViewEngineResult FindAreaPartialView(
        ControllerContext controllerContext, string areaName,
        string viewName, bool useCache)
    {
        string controllerName =
            controllerContext.RouteData.GetRequiredString("controller");
        string[] searchedViewPaths;
        string partialViewPath = GetPath(controllerContext,
            ViewLocationFormats, "PartialViewLocationFormats", viewName,
            controllerName, areaName, "Partial", useCache,
            out searchedViewPaths);
        if (!string.IsNullOrEmpty(partialViewPath))
        {
            return new ViewEngineResult(CreatePartialView(controllerContext,
                partialViewPath), this);
        }
        return new ViewEngineResult(searchedViewPaths);
    }

    protected string CreateCacheKey(string prefix, string name,
        string controller, string area)
    {
        return string.Format(CultureInfo.InvariantCulture,
            ":ViewCacheEntry:{0}:{1}:{2}:{3}:{4}:",
            base.GetType().AssemblyQualifiedName,
            prefix, name, controller, area);
    }

    protected string GetPath(ControllerContext controllerContext,
        string[] locations, string locationsPropertyName, string name,
        string controllerName, string areaName, string cacheKeyPrefix,
        bool useCache, out string[] searchedLocations)
    {
        searchedLocations = EmptyLocations;
        if (string.IsNullOrEmpty(name))
        {
            return string.Empty;
        }
        if ((locations == null) || (locations.Length == 0))
        {
            throw new InvalidOperationException(string.Format("The property " +
                "'{0}' cannot be null or empty.", locationsPropertyName));
        }
        bool isSpecificPath = IsSpecificPath(name);
        string key = CreateCacheKey(cacheKeyPrefix, name,
            isSpecificPath ? string.Empty : controllerName,
            isSpecificPath ? string.Empty : areaName);
        if (useCache)
        {
            string viewLocation = ViewLocationCache.GetViewLocation(
                controllerContext.HttpContext, key);
            if (viewLocation != null)
            {
                return viewLocation;
            }
        }
        if (!isSpecificPath)
        {
            return GetPathFromGeneralName(controllerContext, locations, name,
                controllerName, areaName, key, ref searchedLocations);
        }
        return GetPathFromSpecificName(controllerContext, name, key,
            ref searchedLocations);
    }

    protected string GetPathFromGeneralName(ControllerContext controllerContext,
        string[] locations, string name, string controllerName,
        string areaName, string cacheKey, ref string[] searchedLocations)
    {
        string virtualPath = string.Empty;
        searchedLocations = new string[locations.Length];
        for (int i = 0; i < locations.Length; i++)
        {
            if (string.IsNullOrEmpty(areaName) && locations[i].Contains("{2}"))
            {
                continue;
            }
            string testPath = string.Format(CultureInfo.InvariantCulture,
                locations[i], name, controllerName, areaName);
            if (FileExists(controllerContext, testPath))
            {
                searchedLocations = EmptyLocations;
                virtualPath = testPath;
                ViewLocationCache.InsertViewLocation(
                    controllerContext.HttpContext, cacheKey, virtualPath);
                return virtualPath;
            }
            searchedLocations[i] = testPath;
        }
        return virtualPath;
    }

    protected string GetPathFromSpecificName(
        ControllerContext controllerContext, string name, string cacheKey,
        ref string[] searchedLocations)
    {
        string virtualPath = name;
        if (!FileExists(controllerContext, name))
        {
            virtualPath = string.Empty;
            searchedLocations = new string[] { name };
        }
        ViewLocationCache.InsertViewLocation(controllerContext.HttpContext,
            cacheKey, virtualPath);
        return virtualPath;
    }


    protected string getArea(ControllerContext controllerContext)
    {
        // First try to get area from a RouteValue override, like one specified in the Defaults arg to a Route.
        object areaO;
        controllerContext.RouteData.Values.TryGetValue("area", out areaO);

        // If not specified, try to get it from the Controller's namespace
        if (areaO != null)
            return (string)areaO;

        string namespa = controllerContext.Controller.GetType().Namespace;
        int areaStart = namespa.IndexOf("Areas.");
        if (areaStart == -1)
            return null;

        areaStart += 6;
        int areaEnd = namespa.IndexOf('.', areaStart + 1);
        string area = namespa.Substring(areaStart, areaEnd - areaStart);
        return area;
    }

    protected static bool IsSpecificPath(string name)
    {
        char ch = name[0];
        if (ch != '~')
        {
            return (ch == '/');
        }
        return true;
    }
}

Now as stated, this isn't a concrete engine, so you have to create that as well. This part, fortunately, is much easier, all we need to do is set the default formats and actually create the views:

public class AreaAwareViewEngine : BaseAreaAwareViewEngine
{
    public AreaAwareViewEngine()
    {
        MasterLocationFormats = new string[]
        {
            "~/Areas/{2}/Views/{1}/{0}.master",
            "~/Areas/{2}/Views/{1}/{0}.cshtml",
            "~/Areas/{2}/Views/Shared/{0}.master",
            "~/Areas/{2}/Views/Shared/{0}.cshtml",
            "~/Views/{1}/{0}.master",
            "~/Views/{1}/{0}.cshtml",
            "~/Views/Shared/{0}.master"
            "~/Views/Shared/{0}.cshtml"
        };
        ViewLocationFormats = new string[]
        {
            "~/Areas/{2}/Views/{1}/{0}.aspx",
            "~/Areas/{2}/Views/{1}/{0}.ascx",
            "~/Areas/{2}/Views/{1}/{0}.cshtml",
            "~/Areas/{2}/Views/Shared/{0}.aspx",
            "~/Areas/{2}/Views/Shared/{0}.ascx",
            "~/Areas/{2}/Views/Shared/{0}.cshtml",
            "~/Views/{1}/{0}.aspx",
            "~/Views/{1}/{0}.ascx",
            "~/Views/{1}/{0}.cshtml",
            "~/Views/Shared/{0}.aspx"
            "~/Views/Shared/{0}.ascx"
            "~/Views/Shared/{0}.cshtml"
        };
        PartialViewLocationFormats = ViewLocationFormats;
    }

    protected override IView CreatePartialView(
        ControllerContext controllerContext, string partialPath)
    {
        if (partialPath.EndsWith(".cshtml"))
            return new System.Web.Mvc.RazorView(controllerContext, partialPath, null, false, null);
        else
            return new WebFormView(controllerContext, partialPath);
    }

    protected override IView CreateView(ControllerContext controllerContext,
        string viewPath, string masterPath)
    {
        if (viewPath.EndsWith(".cshtml"))
            return new RazorView(controllerContext, viewPath, masterPath, false, null);
        else
            return new WebFormView(controllerContext, viewPath, masterPath);
    }
}

Note that we've added few entries to the standard ViewLocationFormats. These are the new {2} entries, where the {2} will be mapped to the area we put in the RouteData. I've left the MasterLocationFormats alone, but obviously you can change that if you want.

global.asax
protected void Application_Start()
{
    RegisterRoutes(RouteTable.Routes);
    ViewEngines.Engines.Clear();
    ViewEngines.Engines.Add(new AreaAwareViewEngine());
}

...and register the default route:

public static void RegisterRoutes(RouteCollection routes)
{
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
    routes.MapRoute(
        "Area",
        "",
        new { area = "AreaZ", controller = "Default", action = "ActionY" }
    );
    routes.MapRoute(
        "Default",
        "{controller}/{action}/{id}",
        new { controller = "Home", action = "Index", id = "" }
    );
}

Now Create the AreaController we just referenced:

public class DefaultController : Controller
{
    public ActionResult ActionY()
    {
        return View("TestView");
    }
}

Obviously we need the directory structure and view to go with it - we'll keep this super simple:

<%@ Page Title="" Language="C#" Inherits="System.Web.Mvc.ViewPage" %>
<h2>TestView</h2>
This is a test view in AreaZ.

For the most part, you should be able to just take the BaseAreaAwareViewEngine and AreaAwareViewEngine and drop it into any MVC project, so even though it took a lot of code to get this done, you only have to write it once. After that, it's just a matter of editing a few lines in global.asax.cs and creating your site structure.

This is most likly the best current solution but far from ideal. As above once you add an Actionlink or such the same problem exists.

@Pino: I think you should be able to solve the ActionLink issue by adding the same area = "AreaZ" to the "Default" route mapping in global.asax.cs. I'm not positive though; try it and see.

phew, what an answer! Long but detailed and excellent!

In MVC4 "Default" route declaraton moved from Global.asax to ~/App_Start/RouteConfig.cs/RegisterRoutes()

I hate to downvote, but I really can't believe the below answer by @Chris Alderson hasn't received more votes. It's a much simpler solution than this one and seems to resolve the edge cases (ActionLinks, etc).

asp.net mvc - How to set a Default Route (To an Area) in MVC - Stack O...

asp.net-mvc asp.net-mvc-2
Rectangle 27 92

This one interested me, and I finally had a chance to look into it. Other folks apparently haven't understood that this is an issue with finding the view, not an issue with the routing itself - and that's probably because your question title indicates that it's about routing.

In any case, because this is a View-related issue, the only way to get what you want is to override the default view engine. Normally, when you do this, it's for the simple purpose of switching your view engine (i.e. to Spark, NHaml, etc.). In this case, it's not the View-creation logic we need to override, but the FindPartialView and FindView methods in the VirtualPathProviderViewEngine class.

You can thank your lucky stars that these methods are in fact virtual, because everything else in the VirtualPathProviderViewEngine is not even accessible - it's private, and that makes it very annoying to override the find logic because you have to basically rewrite half of the code that's already been written if you want it to play nice with the location cache and the location formats. After some digging in Reflector I finally managed to come up with a working solution.

What I've done here is to first create an abstract AreaAwareViewEngine that derives directly from VirtualPathProviderViewEngine instead of WebFormViewEngine. I did this so that if you want to create Spark views instead (or whatever), you can still use this class as the base type.

The code below is pretty long-winded, so to give you a quick summary of what it actually does: It lets you put a {2} into the location format, which corresponds to the area name, the same way {1} corresponds to the controller name. That's it! That's what we had to write all this code for:

public abstract class BaseAreaAwareViewEngine : VirtualPathProviderViewEngine
{
    private static readonly string[] EmptyLocations = { };

    public override ViewEngineResult FindView(
        ControllerContext controllerContext, string viewName,
        string masterName, bool useCache)
    {
        if (controllerContext == null)
        {
            throw new ArgumentNullException("controllerContext");
        }
        if (string.IsNullOrEmpty(viewName))
        {
            throw new ArgumentNullException(viewName,
                "Value cannot be null or empty.");
        }

        string area = getArea(controllerContext);
        return FindAreaView(controllerContext, area, viewName,
            masterName, useCache);
    }

    public override ViewEngineResult FindPartialView(
        ControllerContext controllerContext, string partialViewName,
        bool useCache)
    {
        if (controllerContext == null)
        {
            throw new ArgumentNullException("controllerContext");
        }
        if (string.IsNullOrEmpty(partialViewName))
        {
            throw new ArgumentNullException(partialViewName,
                "Value cannot be null or empty.");
        }

        string area = getArea(controllerContext);
        return FindAreaPartialView(controllerContext, area,
            partialViewName, useCache);
    }

    protected virtual ViewEngineResult FindAreaView(
        ControllerContext controllerContext, string areaName, string viewName,
        string masterName, bool useCache)
    {
        string controllerName =
            controllerContext.RouteData.GetRequiredString("controller");
        string[] searchedViewPaths;
        string viewPath = GetPath(controllerContext, ViewLocationFormats,
            "ViewLocationFormats", viewName, controllerName, areaName, "View",
            useCache, out searchedViewPaths);
        string[] searchedMasterPaths;
        string masterPath = GetPath(controllerContext, MasterLocationFormats,
            "MasterLocationFormats", masterName, controllerName, areaName,
            "Master", useCache, out searchedMasterPaths);
        if (!string.IsNullOrEmpty(viewPath) &&
            (!string.IsNullOrEmpty(masterPath) || 
              string.IsNullOrEmpty(masterName)))
        {
            return new ViewEngineResult(CreateView(controllerContext, viewPath,
                masterPath), this);
        }
        return new ViewEngineResult(
            searchedViewPaths.Union<string>(searchedMasterPaths));
    }

    protected virtual ViewEngineResult FindAreaPartialView(
        ControllerContext controllerContext, string areaName,
        string viewName, bool useCache)
    {
        string controllerName =
            controllerContext.RouteData.GetRequiredString("controller");
        string[] searchedViewPaths;
        string partialViewPath = GetPath(controllerContext,
            ViewLocationFormats, "PartialViewLocationFormats", viewName,
            controllerName, areaName, "Partial", useCache,
            out searchedViewPaths);
        if (!string.IsNullOrEmpty(partialViewPath))
        {
            return new ViewEngineResult(CreatePartialView(controllerContext,
                partialViewPath), this);
        }
        return new ViewEngineResult(searchedViewPaths);
    }

    protected string CreateCacheKey(string prefix, string name,
        string controller, string area)
    {
        return string.Format(CultureInfo.InvariantCulture,
            ":ViewCacheEntry:{0}:{1}:{2}:{3}:{4}:",
            base.GetType().AssemblyQualifiedName,
            prefix, name, controller, area);
    }

    protected string GetPath(ControllerContext controllerContext,
        string[] locations, string locationsPropertyName, string name,
        string controllerName, string areaName, string cacheKeyPrefix,
        bool useCache, out string[] searchedLocations)
    {
        searchedLocations = EmptyLocations;
        if (string.IsNullOrEmpty(name))
        {
            return string.Empty;
        }
        if ((locations == null) || (locations.Length == 0))
        {
            throw new InvalidOperationException(string.Format("The property " +
                "'{0}' cannot be null or empty.", locationsPropertyName));
        }
        bool isSpecificPath = IsSpecificPath(name);
        string key = CreateCacheKey(cacheKeyPrefix, name,
            isSpecificPath ? string.Empty : controllerName,
            isSpecificPath ? string.Empty : areaName);
        if (useCache)
        {
            string viewLocation = ViewLocationCache.GetViewLocation(
                controllerContext.HttpContext, key);
            if (viewLocation != null)
            {
                return viewLocation;
            }
        }
        if (!isSpecificPath)
        {
            return GetPathFromGeneralName(controllerContext, locations, name,
                controllerName, areaName, key, ref searchedLocations);
        }
        return GetPathFromSpecificName(controllerContext, name, key,
            ref searchedLocations);
    }

    protected string GetPathFromGeneralName(ControllerContext controllerContext,
        string[] locations, string name, string controllerName,
        string areaName, string cacheKey, ref string[] searchedLocations)
    {
        string virtualPath = string.Empty;
        searchedLocations = new string[locations.Length];
        for (int i = 0; i < locations.Length; i++)
        {
            if (string.IsNullOrEmpty(areaName) && locations[i].Contains("{2}"))
            {
                continue;
            }
            string testPath = string.Format(CultureInfo.InvariantCulture,
                locations[i], name, controllerName, areaName);
            if (FileExists(controllerContext, testPath))
            {
                searchedLocations = EmptyLocations;
                virtualPath = testPath;
                ViewLocationCache.InsertViewLocation(
                    controllerContext.HttpContext, cacheKey, virtualPath);
                return virtualPath;
            }
            searchedLocations[i] = testPath;
        }
        return virtualPath;
    }

    protected string GetPathFromSpecificName(
        ControllerContext controllerContext, string name, string cacheKey,
        ref string[] searchedLocations)
    {
        string virtualPath = name;
        if (!FileExists(controllerContext, name))
        {
            virtualPath = string.Empty;
            searchedLocations = new string[] { name };
        }
        ViewLocationCache.InsertViewLocation(controllerContext.HttpContext,
            cacheKey, virtualPath);
        return virtualPath;
    }


    protected string getArea(ControllerContext controllerContext)
    {
        // First try to get area from a RouteValue override, like one specified in the Defaults arg to a Route.
        object areaO;
        controllerContext.RouteData.Values.TryGetValue("area", out areaO);

        // If not specified, try to get it from the Controller's namespace
        if (areaO != null)
            return (string)areaO;

        string namespa = controllerContext.Controller.GetType().Namespace;
        int areaStart = namespa.IndexOf("Areas.");
        if (areaStart == -1)
            return null;

        areaStart += 6;
        int areaEnd = namespa.IndexOf('.', areaStart + 1);
        string area = namespa.Substring(areaStart, areaEnd - areaStart);
        return area;
    }

    protected static bool IsSpecificPath(string name)
    {
        char ch = name[0];
        if (ch != '~')
        {
            return (ch == '/');
        }
        return true;
    }
}

Now as stated, this isn't a concrete engine, so you have to create that as well. This part, fortunately, is much easier, all we need to do is set the default formats and actually create the views:

public class AreaAwareViewEngine : BaseAreaAwareViewEngine
{
    public AreaAwareViewEngine()
    {
        MasterLocationFormats = new string[]
        {
            "~/Areas/{2}/Views/{1}/{0}.master",
            "~/Areas/{2}/Views/{1}/{0}.cshtml",
            "~/Areas/{2}/Views/Shared/{0}.master",
            "~/Areas/{2}/Views/Shared/{0}.cshtml",
            "~/Views/{1}/{0}.master",
            "~/Views/{1}/{0}.cshtml",
            "~/Views/Shared/{0}.master"
            "~/Views/Shared/{0}.cshtml"
        };
        ViewLocationFormats = new string[]
        {
            "~/Areas/{2}/Views/{1}/{0}.aspx",
            "~/Areas/{2}/Views/{1}/{0}.ascx",
            "~/Areas/{2}/Views/{1}/{0}.cshtml",
            "~/Areas/{2}/Views/Shared/{0}.aspx",
            "~/Areas/{2}/Views/Shared/{0}.ascx",
            "~/Areas/{2}/Views/Shared/{0}.cshtml",
            "~/Views/{1}/{0}.aspx",
            "~/Views/{1}/{0}.ascx",
            "~/Views/{1}/{0}.cshtml",
            "~/Views/Shared/{0}.aspx"
            "~/Views/Shared/{0}.ascx"
            "~/Views/Shared/{0}.cshtml"
        };
        PartialViewLocationFormats = ViewLocationFormats;
    }

    protected override IView CreatePartialView(
        ControllerContext controllerContext, string partialPath)
    {
        if (partialPath.EndsWith(".cshtml"))
            return new System.Web.Mvc.RazorView(controllerContext, partialPath, null, false, null);
        else
            return new WebFormView(controllerContext, partialPath);
    }

    protected override IView CreateView(ControllerContext controllerContext,
        string viewPath, string masterPath)
    {
        if (viewPath.EndsWith(".cshtml"))
            return new RazorView(controllerContext, viewPath, masterPath, false, null);
        else
            return new WebFormView(controllerContext, viewPath, masterPath);
    }
}

Note that we've added few entries to the standard ViewLocationFormats. These are the new {2} entries, where the {2} will be mapped to the area we put in the RouteData. I've left the MasterLocationFormats alone, but obviously you can change that if you want.

global.asax
protected void Application_Start()
{
    RegisterRoutes(RouteTable.Routes);
    ViewEngines.Engines.Clear();
    ViewEngines.Engines.Add(new AreaAwareViewEngine());
}

...and register the default route:

public static void RegisterRoutes(RouteCollection routes)
{
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
    routes.MapRoute(
        "Area",
        "",
        new { area = "AreaZ", controller = "Default", action = "ActionY" }
    );
    routes.MapRoute(
        "Default",
        "{controller}/{action}/{id}",
        new { controller = "Home", action = "Index", id = "" }
    );
}

Now Create the AreaController we just referenced:

public class DefaultController : Controller
{
    public ActionResult ActionY()
    {
        return View("TestView");
    }
}

Obviously we need the directory structure and view to go with it - we'll keep this super simple:

<%@ Page Title="" Language="C#" Inherits="System.Web.Mvc.ViewPage" %>
<h2>TestView</h2>
This is a test view in AreaZ.

For the most part, you should be able to just take the BaseAreaAwareViewEngine and AreaAwareViewEngine and drop it into any MVC project, so even though it took a lot of code to get this done, you only have to write it once. After that, it's just a matter of editing a few lines in global.asax.cs and creating your site structure.

This is most likly the best current solution but far from ideal. As above once you add an Actionlink or such the same problem exists.

@Pino: I think you should be able to solve the ActionLink issue by adding the same area = "AreaZ" to the "Default" route mapping in global.asax.cs. I'm not positive though; try it and see.

phew, what an answer! Long but detailed and excellent!

In MVC4 "Default" route declaraton moved from Global.asax to ~/App_Start/RouteConfig.cs/RegisterRoutes()

I hate to downvote, but I really can't believe the below answer by @Chris Alderson hasn't received more votes. It's a much simpler solution than this one and seems to resolve the edge cases (ActionLinks, etc).

Sign up for our newsletter and get our top new questions delivered to your inbox (see an example).

asp.net mvc - How to set a Default Route (To an Area) in MVC - Stack O...

asp.net-mvc asp.net-mvc-2