Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Configuration / TagMapCollection.cs / 2 / TagMapCollection.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Configuration { using System; using System.Xml; using System.Configuration; using System.Collections.Specialized; using System.Collections; using System.IO; using System.Text; using System.Web.Util; using System.Web.UI; using System.Web.Compilation; using System.Threading; using System.Web.Configuration; using System.Security.Permissions; [ConfigurationCollection(typeof(TagMapInfo))] [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] public sealed class TagMapCollection : ConfigurationElementCollection { private static ConfigurationPropertyCollection _properties; private Hashtable _tagMappings; static TagMapCollection() { // Property initialization _properties = new ConfigurationPropertyCollection(); } public TagMapCollection() { } protected override ConfigurationPropertyCollection Properties { get { return _properties; } } public TagMapInfo this[int index] { get { return (TagMapInfo)BaseGet(index); } set { if (BaseGet(index) != null) { BaseRemoveAt(index); } BaseAdd(index, value); } } public void Add(TagMapInfo tagMapInformation) { BaseAdd(tagMapInformation); } public void Remove(TagMapInfo tagMapInformation) { BaseRemove(GetElementKey(tagMapInformation)); } public void Clear() { BaseClear(); } protected override ConfigurationElement CreateNewElement() { return new TagMapInfo(); } protected override Object GetElementKey(ConfigurationElement element) { return ((TagMapInfo)element).TagType; } internal Hashtable TagTypeMappingInternal { get { if (_tagMappings == null) { lock (this) { if (_tagMappings == null) { Hashtable tagMappings = new Hashtable(StringComparer.OrdinalIgnoreCase); foreach (TagMapInfo tmi in this) { Type tagType = ConfigUtil.GetType(tmi.TagType, "tagType", tmi); Type mappedTagType = ConfigUtil.GetType(tmi.MappedTagType, "mappedTagType", tmi); if (tagType.IsAssignableFrom(mappedTagType) == false) { throw new ConfigurationErrorsException( SR.GetString( SR.Mapped_type_must_inherit, tmi.MappedTagType, tmi.TagType), tmi.ElementInformation.Properties["mappedTagType"].Source, tmi.ElementInformation.Properties["mappedTagType"].LineNumber); } tagMappings[tagType] = mappedTagType; } _tagMappings = tagMappings; } } } return _tagMappings; } } } }
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