Get controller and action name from within controller

Question

For our web application I need to save the order of the fetched and displayed items depending on the view - or to be precise - the controller and action that generated the view  and the user id of course  but that s not the point here   Instead of just giving an identifier myself in each controller action  in order to use it for some view-dependant sorting of DB outputs   I thought that it would be safer and easier to create this identifier automatically from the controller and action method it gets called from  How can I get the name of the controller and action from within the action method in a controller  Or do I need reflection for that

User · Answer

Here are some extension methods for getting that information (it also includes the ID):

public static class HtmlRequestHelper
{
    public static string Id(this HtmlHelper htmlHelper)
    {
        var routeValues = HttpContext.Current.Request.RequestContext.RouteData.Values;

        if (routeValues.ContainsKey("id"))
            return (string)routeValues["id"];
        else if (HttpContext.Current.Request.QueryString.AllKeys.Contains("id"))
            return HttpContext.Current.Request.QueryString["id"];

        return string.Empty;
    }

    public static string Controller(this HtmlHelper htmlHelper)
    {
        var routeValues = HttpContext.Current.Request.RequestContext.RouteData.Values;

        if (routeValues.ContainsKey("controller"))
            return (string)routeValues["controller"];

        return string.Empty;
    }

    public static string Action(this HtmlHelper htmlHelper)
    {
        var routeValues = HttpContext.Current.Request.RequestContext.RouteData.Values;

        if (routeValues.ContainsKey("action"))
            return (string)routeValues["action"];

        return string.Empty;
    }
}

Usage:

@Html.Controller();
@Html.Action();
@Html.Id();

User · Answer

This seems to work nicely for me  so far   also works if you are using attribute routing   public class BaseController   Controller       protected string CurrentAction   get  private set        protected string CurrentController   get  private set         protected override void Initialize RequestContext requestContext                this PopulateControllerActionInfo requestContext              private void PopulateControllerActionInfo RequestContext requestContext                RouteData routedata   requestContext RouteData           object routes           if  routedata Values TryGetValue  MS DirectRouteMatches   out routes                         routedata    routes as List lt RouteData gt    FirstOrDefault                       if  routedata    null              return           Func lt string  string gt  getValue    s    gt                        object o              return routedata Values TryGetValue s  out o    o ToString     String Empty                      this CurrentAction   getValue  action            this CurrentController   getValue  controller

User · Answer

string actionName   this ControllerContext RouteData Values  action   ToString    string controllerName   this ControllerContext RouteData Values  controller   ToString

User · Answer

Add this to your base controller inside GetDefaults   method      protected override void OnActionExecuting ActionExecutingContext filterContext                 GetDefaults             base OnActionExecuting filterContext              private void GetDefaults             var actionName   filterContext ActionDescriptor ActionName      var controllerName   filterContext ActionDescriptor ControllerDescriptor ControllerName          Implement your controllers to Basecontroller  Add a partial view  Breadcrumb cshtml and add it in all required pages with   Html Partial   Breadcrumb     Breadcrumb cshtml   lt span gt       lt a href      ViewData  controllerName    gt           ViewData  controllerName        lt  a gt   gt   ViewData  actionName    lt  span gt

User · Answer

You can get controller name or action name from action like any variable  They are just special  controller and action  and already defined so you do not need to do anything special to get them except telling you need them   public string Index string controller string action            var names string Format  Controller    0   Action   1   controller action        return names         Or you can include controller   action in your models to get two of them and your custom data   public class DtoModel               public string Action   get  set            public string Controller   get  set            public string Name   get  set           public string Index DtoModel baseModel                var names string Format  Controller    0   Action   1   baseModel Controller baseModel Action           return names

User · Answer

Try this code add this override method to controller protected override void OnActionExecuting ActionExecutingContext actionExecutingContext       var actionName   actionExecutingContext ActionDescriptor ActionName     var controllerName   actionExecutingContext ActionDescriptor ControllerDescriptor ControllerName     base OnActionExecuting actionExecutingContext

User · Answer

Why not having something simpler   Just call Request Path  it will return a String Separated by the      and then you can use  Split      1  to get the Controller Name

User · Answer

Here is the simplest and most practical answer to getting a name   var actionName   RouteData Values  action    var controllerName   RouteData Values  controller      Or  string actionName   RouteData Values  action   ToString    string controllerName   RouteData Values  controller   ToString      Code above tests with asp net mvc 5

User · Answer

this ViewContext RouteData Values  controller   ToString

User · Answer

var routeValues   HttpContext Current Request RequestContext RouteData Values  if  routeValues    null         if  routeValues ContainsKey  action                  var actionName   routeValues  action   ToString                          if  routeValues ContainsKey  controller                  var controllerName   routeValues  controller   ToString

User · Answer

To remove need for ToString   call use  string actionName   ControllerContext RouteData GetRequiredString  action    string controllerName   ControllerContext RouteData GetRequiredString  controller

User · Answer

This is what I have so far   var actionName   filterContext ActionDescriptor ActionName  var controllerName   filterContext ActionDescriptor ControllerDescriptor ControllerName

User · Answer

Might be useful   I needed the action in the constructor of the controller  and it appears at this point of the MVC lifecycle  this hasn t initialized  and ControllerContext   null   Instead of delving into the MVC lifecycle and finding the appropriate function name to override  I just found the action in the RequestContext RouteData   But in order to do so  as with any HttpContext related uses in the constructor  you have to specify the full namespace  because this HttpContext also hasn t been initialized   Luckily  it appears System Web HttpContext Current is static      controller constructor public MyController            grab action from RequestContext     string action   System Web HttpContext Current Request RequestContext RouteData GetRequiredString  action            grab session  another example of using System Web HttpContext static reference      string sessionTest   System Web HttpContext Current Session  test   as string     NOTE  likely not the most supported way to access all properties in HttpContext  but for RequestContext and Session it appears to work fine in my application

User · Answer

Use given lines in OnActionExecuting for Action and Controller name    string actionName   this ControllerContext RouteData Values  action   ToString     string controllerName   this ControllerContext RouteData Values  controller   ToString

[c#] Get controller and action name from within controller?

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