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

Visual Studio 2010

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)

public static void RenderAction(
	this HtmlHelper htmlHelper,
	string actionName,
	string controllerName,
	Object 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 Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).


The htmlHelper parameter is null.


The actionName parameter is null 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 { section = "News" }); %>