# ASP.NET 4 Beta 1: WebForms Routing extensie methoden
2010-03-14T00:00
Toen we WebForm routing toevoegden aan ASP.NET 4 Beta 1, hadden we niet de kans om een paar methoden toe te voegen die het werken met Routes en Web Forms een stuk gemakkelijker maken!
Let op: de onderstaande code is incorrect aan die welke wij toevoegen ASP.NET 4 Beta 2, \*dat\* code zal van veel hogere kwaliteit echter, dit is een steekproef alleen!
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1: using System;
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2: using System.Collections.Generic;
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3: using System.Linq;
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4: using System.Web;
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5: using System.Web.Routing;
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6:
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7: public static class RouteExtensions
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8: {
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9: public static string GetUrlForRoute(this System.Web.UI.Page page, string routeName, RouteValueDictionary parameters)
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10: {
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11: VirtualPathData vpd= RouteTable.Routes.GetVirtualPath(null, routeName, parameters);
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12: return vpd.VirtualPath;
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13: }
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14: public static string GetUrlForRoute(this System.Web.UI.Page page, RouteValueDictionary parameters)
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15: {
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16: VirtualPathData vpd = RouteTable.Routes.GetVirtualPath(null, parameters);
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17: return vpd.VirtualPath;
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18: }
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19:
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20: public static void IgnoreRoute(this RouteCollection routes, string url)
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21: {
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22: routes.IgnoreRoute(url, null);
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23: }
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24:
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25: public static void IgnoreRoute(this RouteCollection routes, string url, object constraints)
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26: {
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27: if (routes == null)
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28: {
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29: throw new ArgumentNullException("routes");
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30: }
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31: if (url == null)
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32: {
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33: throw new ArgumentNullException("url");
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34: }
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35: IgnoreRouteInternal internal3 = new IgnoreRouteInternal(url);
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36: internal3.Constraints = new RouteValueDictionary(constraints);
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37: IgnoreRouteInternal item = internal3;
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38: routes.Add(item);
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39: }
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40:
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41: public static Route MapRoute(this RouteCollection routes, string name, string url, string physicalFile)
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42: {
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43: return routes.MapRoute(name, url, physicalFile, null, null);
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44: }
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45:
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46: public static Route MapRoute(this RouteCollection routes, string name, string url, string physicalFile, object defaults)
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47: {
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48: return routes.MapRoute(name, url, physicalFile, defaults, null);
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49: }
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50:
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51: public static Route MapRoute(this RouteCollection routes, string name, string url, string physicalFile, string[] namespaces)
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52: {
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53: return routes.MapRoute(name, url, null, null, namespaces);
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54: }
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55:
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56: public static Route MapRoute(this RouteCollection routes, string name, string url, string physicalFile, object defaults, object constraints)
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57: {
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58: return routes.MapRoute(name, url, physicalFile, defaults, constraints, null);
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59: }
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60:
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61: public static Route MapRoute(this RouteCollection routes, string name, string url, string physicalFile, object defaults, string[] namespaces)
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62: {
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63: return routes.MapRoute(name, url, physicalFile, defaults, null, namespaces);
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64: }
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65:
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66: public static Route MapRoute(this RouteCollection routes, string name, string url, string physicalFile, object defaults, object constraints, string[] namespaces)
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67: {
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68: if (routes == null)
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69: {
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70: throw new ArgumentNullException("routes");
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71: }
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72: if (url == null)
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73: {
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74: throw new ArgumentNullException("url");
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75: }
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76: if (physicalFile == null)
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77: {
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78: throw new ArgumentNullException("physicalfile");
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79: }
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80: Route route2 = new Route(url, new PageRouteHandler(physicalFile));
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81: route2.Defaults = new RouteValueDictionary(defaults);
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82: route2.Constraints = new RouteValueDictionary(constraints);
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83: Route item = route2;
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84: if ((namespaces != null) && (namespaces.Length > 0))
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85: {
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86: item.DataTokens = new RouteValueDictionary();
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87: item.DataTokens["Namespaces"] = namespaces;
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88: }
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89: routes.Add(name, item);
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90: return item;
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91: }
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92:
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93: // Nested Types
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94: private sealed class IgnoreRouteInternal : Route
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95: {
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96: // Methods
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97: public IgnoreRouteInternal(string url)
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98: : base(url, new StopRoutingHandler())
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99: {
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100: }
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101:
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102: public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary routeValues)
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103: {
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104: return null;
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105: }
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106: }
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107: }
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108:
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Hoe gebruik je deze methoden?
Deze extensies voegen een paar eenvoudige methoden toe:
### KaartRoute
Gestolen schaamteloos van MVC. Deze methoden bieden een snelkoppeling naar het definiëren van Routes voor WebForms.
RouteCollection.MapRoute(string naam, string url, string fysicalFile);
Bijvoorbeeld om een eenvoudige route in kaart te brengen die je nu kunt doen:
RouteTable.Routes.MapRoute(...ProductDetailsRoute..., producten/{productid..., ..~/ProductDetails.aspx
Heeft ook een paar varianten waardoor voor het definiëren van defaults etc
RouteCollection.MapRoute(string naam, string url, string fysicalFile, object defaults);
RouteCollection.MapRoute(string naam, string url, string fysicalFile, object defaults, string[] namespaces);
### GetRouteForUrl
Pagina.GetUrlForRoute(string routeNaam, RouteValueDictionary parameters);
Het gebruik van een specifiek genoemde route en RouteValueDictionary met een aantal parameters geeft u een tekenreeks die de Url te gebruiken. ECHT nuttig in databound apps!
b.v.
```
```
Pagina.GetUrlForRoute(RouteValueDictionary parameters);
Hetzelfde, maar auto-matcht de RouteValueDictionary parameters met een route
### Route negeren
Hiermee kunt u urls die niet moeten worden geprobeerd voor wedstrijden tegen routes te definiëren (kan nuttig zijn voor het upgraden van WebForms apps)
RouteCollection.IgnoreRoute(string url);
RouteCollection.IgnoreRoute(string url, object beperkingen);