106 lines
3.4 KiB
C#
106 lines
3.4 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="RouteParameter.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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namespace System.Web.UI.WebControls {
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using System;
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using System.ComponentModel;
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using System.Data;
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using System.Security.Permissions;
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using System.Web.Routing;
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/// <devdoc>
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/// Represents a Parameter that gets its value from the application's route data.
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/// </devdoc>
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[
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DefaultProperty("RouteKey"),
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]
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public class RouteParameter : Parameter {
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/// <devdoc>
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/// Creates an instance of the RouteParameter class.
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/// </devdoc>
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public RouteParameter() {
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}
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/// <devdoc>
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/// Creates an instance of the RouteParameter class with the specified parameter name and request field.
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/// </devdoc>
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public RouteParameter(string name, string routeKey) : base(name) {
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RouteKey = routeKey;
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}
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/// <devdoc>
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/// Creates an instance of the routeParameter class with the specified parameter name, database type, and
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/// request field.
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/// </devdoc>
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public RouteParameter(string name, DbType dbType, string routeKey)
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: base(name, dbType) {
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RouteKey = routeKey;
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}
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/// <devdoc>
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/// Creates an instance of the RouteParameter class with the specified parameter name, type, and request field.
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/// </devdoc>
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public RouteParameter(string name, TypeCode type, string routeKey) : base(name, type) {
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RouteKey = routeKey;
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}
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/// <devdoc>
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/// Used to clone a parameter.
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/// </devdoc>
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protected RouteParameter(RouteParameter original) : base(original) {
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RouteKey = original.RouteKey;
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}
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/// <devdoc>
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/// The name of the route value to get the value from.
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/// </devdoc>
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[
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DefaultValue(""),
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WebCategory("Parameter"),
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WebSysDescription(SR.RouteParameter_RouteKey),
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]
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public string RouteKey {
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get {
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object o = ViewState["RouteKey"];
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if (o == null)
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return String.Empty;
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return (string)o;
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}
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set {
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if (RouteKey != value) {
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ViewState["RouteKey"] = value;
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OnParameterChanged();
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}
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}
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}
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/// <devdoc>
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/// Creates a new RouteParameter that is a copy of this RouteParameter.
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/// </devdoc>
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protected override Parameter Clone() {
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return new RouteParameter(this);
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}
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/// <devdoc>
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/// Returns the updated value of the parameter.
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/// </devdoc>
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protected internal override object Evaluate(HttpContext context, Control control) {
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if (context == null || context.Request == null || control == null) {
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return null;
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}
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RouteData routeData = control.Page.RouteData;
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if (routeData == null) {
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return null;
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}
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return routeData.Values[RouteKey];
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}
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}
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}
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