Here is the sample:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Routing;
public static class RouteExtensions
{
public static string GetUrlForRoute(this System.Web.UI.Page page, string routeName, RouteValueDictionary parameters)
{
VirtualPathData vpd= RouteTable.Routes.GetVirtualPath(null, routeName, parameters);
return vpd.VirtualPath;
}
public static string GetUrlForRoute(this System.Web.UI.Page page, RouteValueDictionary parameters)
{
VirtualPathData vpd = RouteTable.Routes.GetVirtualPath(null, parameters);
return vpd.VirtualPath;
}
public static void IgnoreRoute(this RouteCollection routes, string url)
{
routes.IgnoreRoute(url, null);
}
public static void IgnoreRoute(this RouteCollection routes, string url, object constraints)
{
if (routes == null)
{
throw new ArgumentNullException("routes");
}
if (url == null)
{
throw new ArgumentNullException("url");
}
IgnoreRouteInternal internal3 = new IgnoreRouteInternal(url);
internal3.Constraints = new RouteValueDictionary(constraints);
IgnoreRouteInternal item = internal3;
routes.Add(item);
}
public static Route MapRoute(this RouteCollection routes, string name, string url, string physicalFile)
{
return routes.MapRoute(name, url, physicalFile, null, null);
}
public static Route MapRoute(this RouteCollection routes, string name, string url, string physicalFile, object defaults)
{
return routes.MapRoute(name, url, physicalFile, defaults, null);
}
public static Route MapRoute(this RouteCollection routes, string name, string url, string physicalFile, string[] namespaces)
{
return routes.MapRoute(name, url, null, null, namespaces);
}
public static Route MapRoute(this RouteCollection routes, string name, string url, string physicalFile, object defaults, object constraints)
{
return routes.MapRoute(name, url, physicalFile, defaults, constraints, null);
}
public static Route MapRoute(this RouteCollection routes, string name, string url, string physicalFile, object defaults, string[] namespaces)
{
return routes.MapRoute(name, url, physicalFile, defaults, null, namespaces);
}
public static Route MapRoute(this RouteCollection routes, string name, string url, string physicalFile, object defaults, object constraints, string[] namespaces)
{
if (routes == null)
{
throw new ArgumentNullException("routes");
}
if (url == null)
{
throw new ArgumentNullException("url");
}
if (physicalFile == null)
{
throw new ArgumentNullException("physicalfile");
}
Route route2 = new Route(url, new PageRouteHandler(physicalFile));
route2.Defaults = new RouteValueDictionary(defaults);
route2.Constraints = new RouteValueDictionary(constraints);
Route item = route2;
if ((namespaces != null) && (namespaces.Length > 0))
{
item.DataTokens = new RouteValueDictionary();
item.DataTokens["Namespaces"] = namespaces;
}
routes.Add(name, item);
return item;
}
// Nested Types
private sealed class IgnoreRouteInternal : Route
{
// Methods
public IgnoreRouteInternal(string url)
: base(url, new StopRoutingHandler())
{
}
public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary routeValues)
{
return null;
}
}
}
So, how do you use these methods?
These extensions add a few simple methods:
MapRoute
Stolen shamelessly from MVC. These methods provide a shortcut to defining Routes for WebForms.
RouteCollection.MapRoute(string name, string url, string physicalFile);
For example to map a simple route you can now do:
RouteTable.Routes.MapRoute(“ProductDetailsRoute”, “products/{productid}”, “~/ProductDetails.aspx”);
Also has a couple of variants allowing for defining defaults etc…
RouteCollection.MapRoute(string name, string url, string physicalFile, object defaults);
RouteCollection.MapRoute(string name, string url, string physicalFile, object defaults, string[] namespaces);
GetRouteForUrl
Page.GetUrlForRoute(string routeName, RouteValueDictionary parameters);
Using a specifically named route and RouteValueDictionary containing a number of parameters will give you back a string containing the Url to use. REALLY useful in databound apps!
For example:
<asp:hyperlink ID="HyperLink1" runat="server" NavigateUrl='<%# Page.GetUrlForRoute("ProductDetailsRoute",new RouteValueDictionary( new {productid= Eval("ProductID")}))%>' Text="Details"></asp:hyperlink>
Page.GetUrlForRoute(RouteValueDictionary parameters);
Same thing, but auto-matches the RouteValueDictionary parameters against a route…
IgnoreRoute
Allows you to define urls which should not be tried for matches against routes (can be useful for upgrading WebForms apps)
RouteCollection.IgnoreRoute(string url);
RouteCollection.IgnoreRoute(string url, object constraints);
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