Get Current Controller in Action

Hello,

I'm in the current controller "HomeController", how do I get it on my action? This yields nothing [:(]

Function Index() As ActionResult
        Dim value As ControllerBuilder

        value = ControllerBuilder.Current

        Return View()
End Function

-imperialx

Re: Get Current Controller in Action

You want the instance of the controller? That's the "this" object in C#, or the "Me" object in VB.NET.

Re: Get Current Controller in Action

Under the View page, I can specify if I'm within the current controller like,

<%If Not (TypeOf ViewContext.Controller Is ProjectName.HomeController) Then%>
<%Html.RenderAction("ControllerName", "ViewName")%>
<%End If%>

How can I specify if I'm under an Action?

Re: Get Current Controller in Action

Dont know whether its works for you but you can easily send your action name in a ViewData like ViewData["ActionName"] = "YourActionName" to your view.

hope this helps.

Re: Get Current Controller in Action

How about referencing a strongly-typed?

This too yields nothing, [:(]

Dim value As String = Me.ControllerContext.RequestContext.HttpContext.Items("Home")

Re: Get Current Controller in Action

What are you trying to accomplish? What do you mean if you're "under an action"?

If you're asking how to get the name of the current controller and action from the View, you can do that with something like this

Dim action as String = ViewContext.Controller.ValueProvider("action").RawValue
Dim controller as String = ViewContext.Controller.ValueProvider("controller").RawValue

Re: Get Current Controller in Action

CodeHobo
If you're asking how to get the name of the current controller and action from the View, you can do that with something like this

But I'm getting this error "Reference to a non-shared member requires an object reference."

    Function Index() As ActionResult
        Dim action As String = ViewContext.Controller.ValueProvider("action").RawValue
        Dim controller As String = ViewContext.Controller.ValueProvider("controller").RawValue

        Return View()
    End Function

Re: Get Current Controller in Action

That code was getting the name of the controller and action in the View. To find the names of both in the controller use this:

Function Index() As ActionResult
  Dim controllerName As String = CType(Me.ValueProvider("controller").RawValue, String)
  Dim actionName As String = CType(Me.ValueProvider("action").RawValue, String)


  Return View()
End Function

Re: Get Current Controller in Action

FYI - Please use Me.RouteData.Values("action") and Me.RouteData.Values("controller") for this instead of going through the ValueProvider. The RouteData contains information on the request / route (including controller and action), and the value provider contains information used for binding.

Re: Get Current Controller in Action

levib
Please use Me.RouteData.Values("action") and Me.RouteData.Values("controller") for this instead of going through the ValueProvider.

Why do I get this error "Object Type is not reference" when I put it on a constructor?

Public Sub New()

ViewData("ThisIsTheCurrentController") = Me.RouteData.Values("controller")
End Sub

Re: Get Current Controller in Action

The constructor is too early to access the RouteData property (or any request-specific property, for that matter) on the controller. It might be better to override OnActionExecuting() and access ViewData + RouteData from there, depending on what exactly you want to do.

Re: Get Current Controller in Action

levib
It might be better to override OnActionExecuting() and access ViewData + RouteData from there, depending on what exactly you want to do.

Hi Levib,

How do I pass the return value back to controller? This one is not right.

Class

Public Class UserTimeCheckAttribute
    Inherits ActionFilterAttribute

    Public Overloads Overrides Sub OnActionExecuting(ByVal filterContext As ActionExecutingContext)
        Dim VisitController As String = filterContext.RouteData.Values("controller")

   Return "User visit Controller: " & VisitController & " at Time: " & Date.Now [:(]

    End Sub

End Class

Controller

   <UserTimeCheck()> _
    Public Class BaseController
        Inherits System.Web.Mvc.Controller

        Public Sub New()

        End Sub

   Function Index() As ActionResult
            ViewData("Message") = "Welcome to Asp.net MVC"

            Return View()
        End Function

    End Class

-imperialx

Re: Get Current Controller in Action

The OnActionExecuting() method doesn't return anything. But you can access filterContext.Controller.ViewData from within that method, so you can populate ViewData.