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LinkExtensions.ActionLink Method (HtmlHelper, String, String, String)

.NET Framework 4

Other Versions

Returns an anchor element (a element) that contains the virtual path of the specified action.

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

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public static MvcHtmlString ActionLink(
	this HtmlHelper htmlHelper,
	string linkText,
	string actionName,
	string controllerName
)

htmlHelper: Type: System.Web.Mvc.HtmlHelper
The HTML helper instance that this method extends.

Type: System.Web.Mvc.MvcHtmlString
An anchor element (a element).

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).

Exception	Condition
ArgumentException	The linkText parameter is null or empty.

The ActionLink method renders an element that links to an action method.

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FAQ

Watch out for no syntax checking

<h1>Click <% Html.ActionLink("Test", "Home", "About"); %></h1>

Will fail without error. It will render <h1>Click </h1> and leave you guessing.

<h1>Click <%: Html.ActionLink("Test", "Home", "About"); %></h1>

Will give you a "CS1026: ) expected"

<h1>Click <%: Html.ActionLink("Test", "Home", "About") %></h1>

Will work like a charm.

The difference is the colon added in the second attempt, and the semi-colon removed on the third.

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Watch-out for calls dropping into the wrong overloads

It's easy to call the wrong overload on ActionLink because the ones accepting objects could easily take a string. Use named params to be super sure.

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