using System; using System.Web.Routing; using System.Web; namespace RouteDebug { public class DebugHttpHandler : IHttpHandler { public RequestContext RequestContext { get; set; } public bool IsReusable { get { return true; } } public void ProcessRequest(HttpContext context) { string htmlFormat = @" Route Tester

Route Tester

Type in a url in the address bar to see which defined routes match it. A {{*catchall}} route is added to the list of routes automatically in case none of your routes match.

Route: {1}

{0}

Route Data
Key	Value

{2}

All Routes
Matches Current Request	Url	Defaults	Constraints	DataTokens

"; string routeDataRows = string.Empty; RouteData routeData = this.RequestContext.RouteData; RouteValueDictionary routeValues = routeData.Values; RouteBase matchedRouteBase = routeData.Route; string routes = string.Empty; using (RouteTable.Routes.GetReadLock()) { foreach (RouteBase routeBase in RouteTable.Routes) { bool matchesCurrentRequest = (routeBase.GetRouteData(RequestContext.HttpContext) != null); string matchText = string.Format(@"{0}", matchesCurrentRequest); string url = "n/a"; string defaults = "n/a"; string constraints = "n/a"; string dataTokens = "n/a"; Route route = routeBase as Route; if (route != null) { url = route.Url; defaults = FormatRouteValueDictionary(route.Defaults); constraints = FormatRouteValueDictionary(route.Constraints); dataTokens = FormatRouteValueDictionary(route.DataTokens); } routes += string.Format(@"{0}{1}{2}{3}{3}" , matchText , url , defaults , constraints , dataTokens); } } string matchedRouteUrl = "n/a"; if (!(matchedRouteBase is DebugRoute)) { foreach (string key in routeValues.Keys) { routeDataRows += string.Format("\t{0}{1} ", key, routeValues[key]); } Route matchedRoute = matchedRouteBase as Route; if (matchedRoute != null) matchedRouteUrl = matchedRoute.Url; } else { matchedRouteUrl = "NO MATCH!"; } context.Response.Write(string.Format(htmlFormat , routeDataRows , matchedRouteUrl , routes)); } private static string FormatRouteValueDictionary(RouteValueDictionary values) { if (values == null) return "(null)"; string display = string.Empty; foreach (string key in values.Keys) display += string.Format("{0} = {1}, ", key, values[key]); if (display.EndsWith(", ")) display = display.Substring(0, display.Length - 2); return display; } } }