Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / Compilation / RouteUrlExpressionBuilder.cs / 1305376 / RouteUrlExpressionBuilder.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Compilation { using System; using System.Security.Permissions; using System.CodeDom; using System.ComponentModel; using System.Configuration; using System.Diagnostics.CodeAnalysis; using System.Web.UI; using System.Web.Routing; using System.Collections.Generic; [ExpressionPrefix("Routes")] [ExpressionEditor("System.Web.UI.Design.RouteUrlExpressionEditor, " + AssemblyRef.SystemDesign)] public class RouteUrlExpressionBuilder : ExpressionBuilder { public override bool SupportsEvaluate { get { return true; } } public override CodeExpression GetCodeExpression(BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context) { return new CodeMethodInvokeExpression( new CodeTypeReferenceExpression(this.GetType()), "GetRouteUrl", new CodeThisReferenceExpression(), new CodePrimitiveExpression(entry.Expression.Trim())); } public override object EvaluateExpression(object target, BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context) { return GetRouteUrl(context.TemplateControl, entry.Expression.Trim()); } public static bool TryParseRouteExpression(string expression, RouteValueDictionary routeValues, out string routeName) { routeName = null; if (String.IsNullOrEmpty(expression)) return false; string[] pieces = expression.Split(new char[] { ',' }); foreach (string piece in pieces) { string[] subs = piece.Split(new char[] { '=' }); // Make sure we have exactly= if (subs.Length != 2) { return false; } string key = subs[0].Trim(); string value = subs[1].Trim(); if (string.IsNullOrEmpty(key)) { return false; } if (key.Equals("RouteName", StringComparison.OrdinalIgnoreCase)) { routeName = value; } else { routeValues[key] = value; } } return true; } [SuppressMessage("Microsoft.Design", "CA1055", Justification = "Consistent with other URL properties in ASP.NET.")] // Format will be <%$ ExpPrefix: RouteName = , Key=Value, Key2=Value2 %> public static string GetRouteUrl(Control control, string expression) { if (control == null) { throw new ArgumentNullException("control"); } string routeName = null; RouteValueDictionary routeParams = new RouteValueDictionary(); if (TryParseRouteExpression(expression, routeParams, out routeName)) { return control.GetRouteUrl(routeName, routeParams); } else { throw new InvalidOperationException(SR.GetString(SR.RouteUrlExpression_InvalidExpression)); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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