77 lines
3.2 KiB
C#
77 lines
3.2 KiB
C#
|
//------------------------------------------------------------------------------
|
||
|
|
// <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;
|
||
|
|
using System.Web.UI;
|
||
|
|
using System.Web.Routing;
|
||
|
|
using System.Collections.Generic;
|
||
|
|
|
||
|
|
[ExpressionPrefix("Routes")]
|
||
|
|
[ExpressionEditor("System.Web.UI.Design.RouteValueExpressionEditor, " + AssemblyRef.SystemDesign)]
|
||
|
|
public class RouteValueExpressionBuilder : 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()),
|
||
|
|
"GetRouteValue",
|
||
|
|
new CodePropertyReferenceExpression(new CodeThisReferenceExpression(), "Page"),
|
||
|
|
new CodePrimitiveExpression(entry.Expression.Trim()),
|
||
|
|
new CodeTypeOfExpression(new CodeTypeReference(entry.ControlType)),
|
||
|
|
new CodePrimitiveExpression(entry.Name)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
public override object EvaluateExpression(object target, BoundPropertyEntry entry,
|
||
|
|
object parsedData, ExpressionBuilderContext context) {
|
||
|
|
|
||
|
|
// Target should always be a control
|
||
|
|
Control control = target as Control;
|
||
|
|
if (control == null)
|
||
|
|
return null;
|
||
|
|
|
||
|
|
return GetRouteValue(context.TemplateControl.Page, entry.Expression.Trim(), entry.ControlType, entry.Name);
|
||
|
|
}
|
||
|
|
|
||
|
|
internal static object ConvertRouteValue(object value, Type controlType, string propertyName) {
|
||
|
|
// Try to do any type converting necessary for the property set
|
||
|
|
if (controlType != null && !String.IsNullOrEmpty(propertyName)) {
|
||
|
|
PropertyDescriptor propDesc = TypeDescriptor.GetProperties(controlType)[propertyName];
|
||
|
|
if (propDesc != null) {
|
||
|
|
if (propDesc.PropertyType != typeof(string)) {
|
||
|
|
TypeConverter converter = propDesc.Converter;
|
||
|
|
if (converter.CanConvertFrom(typeof(string))) {
|
||
|
|
return converter.ConvertFrom(value);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return value;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Format will be <%$ RouteValue: Key %>, controlType,propertyName are used to figure out what typeconverter to use
|
||
|
|
public static object GetRouteValue(Page page, string key, Type controlType, string propertyName) {
|
||
|
|
if (page == null || String.IsNullOrEmpty(key) || page.RouteData == null) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ConvertRouteValue(page.RouteData.Values[key], controlType, propertyName);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|