1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
//------------------------------------------------------------------------------
// <copyright file="AppSettingsExpressionBuilder.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
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 <key> = <value>
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 = <name>, 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));
}
}
}
}
|
