ChildActionExtensions.RenderAction Method (HtmlHelper, String, String, Object)

Invokes the specified child action method using the specified parameters and controller name and renders the result inline in the parent view.

Namespace:  System.Web.Mvc.Html
Assembly:  System.Web.Mvc (in System.Web.Mvc.dll)

<ExtensionAttribute> _
Public Shared Sub RenderAction ( _
	htmlHelper As HtmlHelper, _
	actionName As String, _
	controllerName As String, _
	routeValues As Object _
Dim htmlHelper As HtmlHelper 
Dim actionName As String 
Dim controllerName As String 
Dim routeValues As Object 

htmlHelper.RenderAction(actionName, _
	controllerName, routeValues)


Type: System.Web.Mvc.HtmlHelper

The HTML helper instance that this method extends.

Type: System.String

The name of the child action method to invoke.

Type: System.String

The name of the controller that contains the action method.

Type: System.Object

An object that contains the parameters for a route. You can use routeValues to provide the parameters that are bound to the action method parameters. The routeValues parameter is merged with the original route values and overrides them.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type HtmlHelper. When you use instance method syntax to call this method, omit the first parameter. For more information, see or


The htmlHelper parameter is Nothing.


The actionName parameter is Nothing or empty.


The required virtual path data cannot be found.

The following example shows how to call the RenderAction helper method in markup and how to pass to it the name of the action method and controller that renders the child view and an anonymous object that contains route values.

<% Html.RenderAction("Display", "Home", New With {.section = "News"}) %>