Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Configuration / BuildProvider.cs / 2 / BuildProvider.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.Globalization; using System.IO; using System.Text; using System.Web.Compilation; using System.Reflection; using System.Web.Hosting; using System.Web.UI; using System.CodeDom.Compiler; using System.Web.Util; using System.ComponentModel; using System.Security.Permissions; [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] public sealed class BuildProvider : ConfigurationElement { private static ConfigurationPropertyCollection _properties; private static readonly ConfigurationProperty _propExtension = new ConfigurationProperty("extension", typeof(string), null, null, StdValidatorsAndConverters.NonEmptyStringValidator, ConfigurationPropertyOptions.IsRequired | ConfigurationPropertyOptions.IsKey); private static readonly ConfigurationProperty _propType = new ConfigurationProperty("type", typeof(string), null, null, StdValidatorsAndConverters.NonEmptyStringValidator, ConfigurationPropertyOptions.IsRequired); private Type _type; // AppliesTo value from the BuildProviderAppliesToAttribute private BuildProviderAppliesTo _appliesToInternal; static BuildProvider() { _properties = new ConfigurationPropertyCollection(); _properties.Add(_propExtension); _properties.Add(_propType); } public BuildProvider(String extension, String type) : this() { Extension = extension; Type = type; } internal BuildProvider() { } protected override ConfigurationPropertyCollection Properties { get { return _properties; } } // this override is required because AppliesTo may be in any order in the // property string but it still and the default equals operator would consider // them different depending on order in the persisted string. public override bool Equals(object provider) { BuildProvider o = provider as BuildProvider; return (o != null && StringUtil.EqualsIgnoreCase(Extension, o.Extension) && Type == o.Type); } public override int GetHashCode() { return HashCodeCombiner.CombineHashCodes(Extension.ToLower(CultureInfo.InvariantCulture).GetHashCode(), Type.GetHashCode()); } [ConfigurationProperty("extension", IsRequired = true, IsKey = true, DefaultValue = "")] [StringValidator(MinLength = 1)] public string Extension { get { return (string)base[_propExtension]; } set { base[_propExtension] = value; } } [ConfigurationProperty("type", IsRequired = true, DefaultValue = "")] [StringValidator(MinLength = 1)] public string Type { get { return (string)base[_propType]; } set { base[_propType] = value; } } internal Type TypeInternal { get { if (_type == null) { lock (this) { if (_type == null) { _type = CompilationUtil.LoadTypeWithChecks(Type, typeof(System.Web.Compilation.BuildProvider), null, this, "type"); } } } return _type; } } internal BuildProviderAppliesTo AppliesToInternal { get { if (_appliesToInternal != 0) return _appliesToInternal; // Check whether the control builder's class exposes an AppliesTo attribute object[] attrs = TypeInternal.GetCustomAttributes( typeof(BuildProviderAppliesToAttribute), /*inherit*/ true); if ((attrs != null) && (attrs.Length > 0)) { Debug.Assert(attrs[0] is BuildProviderAppliesToAttribute); _appliesToInternal = ((BuildProviderAppliesToAttribute)attrs[0]).AppliesTo; } else { // Default to applying to All _appliesToInternal = BuildProviderAppliesTo.All; } return _appliesToInternal; } } } }
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