Specifying what area an ActionLink should use

Using routevalues you can tell the html helper what area you want to create a action link to.

//create a link that will go to AreaName
Html.ActionLink("Link Text", "ActionName", "ControllerName", new { Area = "AreaName" }, new{})
//Default area (= no area)
Html.ActionLink("Link Text", "ActionName", "ControllerName", new { Area = "" }, new{})
//create a link that will go to AreaName and with some htmlAttributes
Html.ActionLink("Link Text", "ActionName", "ControllerName", new { Area = "AreaName" }, new{@class="myCssClass"})
public static MvcHtmlString ActionLink(
	string linkText,
	string actionName,
	string controllerName,
	RouteValueDictionary routeValues,
	IDictionary<string, Object> htmlAttributes

asp.net C# Url.Action with routevalues

Using routevales you can change area and/or pass parameters on to the link you wish to hit.

//"normal" Url.Action - creates a link in the area where it is called from (and don't pass any values along)
<a href="@Url.Action("action", "controller")" class="myCssClass">link text</a>
//Url.Action with a that links to another area (area name or empty for the default area); also sets the category to shoes and it passes along the id that this view has.
<a href="@Url.Action("action", "controller", new { Area = "", id = Model.id, category="shoes"})" class="myCssClass">link text</a>