Monthly Archives: April 2011

C# MVC# create a URI from a Url.Action

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Sometimes the need arises to create a URI object instead of just a link. This can be done by using Url.Action.

new Uri(Url.Action("action", "controller", null, Request.Url.Scheme))
 
//definitions 
public Uri(
	string uriString
)
 
public string Action(
	string actionName,
	string controllerName,
	Object routeValues,
	string protocol
)

Specifying what area an ActionLink should use

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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"})
 
 
//Definition
public static MvcHtmlString ActionLink(
	string linkText,
	string actionName,
	string controllerName,
	RouteValueDictionary routeValues,
	IDictionary<string, Object> htmlAttributes
)

asp.net C# Url.Action with routevalues

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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>

MVC3 Getting the URI in a controller

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If there is a need to get the URI that the was used to reach the controller then the Request holds that information and it can be retrieved to a URI object

public ActionResult MyAction()
{
    var uri = Request.Url;
    var port = uri.Port;
    var absoluteUri = uri.AbsoluteUri
 
    //... do things here
 
    return View();    
}