ChildActionExtensions.Action Method (HtmlHelper, String, String)

Visual Studio 2010

Invokes the specified child action method using the specified controller name and returns the result as an HTML string.

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

public static MvcHtmlString Action(
	this HtmlHelper htmlHelper,
	string actionName,
	string controllerName


Type: System.Web.Mvc.HtmlHelper
The HTML helper instance that this method extends.
Type: System.String
The name of the action method to invoke.
Type: System.String
The name of the controller that contains the action method.

Return Value

Type: System.Web.Mvc.MvcHtmlString
The child action result as an HTML string.

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 Action helper method in markup and how to pass to it the name of the action method and controller that renders the child view.

<%= Html.Action("ChildList", "Home") %>