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The Labs \ Source Viewer \ SSCLI \ System.Diagnostics \ SwitchElementsCollection

SSCLI
  1. //------------------------------------------------------------------------------
  2. // <copyright file="SwitchElementsCollection.cs" company="Microsoft Corporation">
  3. //
  4. // Copyright (c) 2006 Microsoft Corporation. All rights reserved.
  5. //
  6. // The use and distribution terms for this software are contained in the file
  7. // named license.txt, which can be found in the root of this distribution.
  8. // By using this software in any fashion, you are agreeing to be bound by the
  9. // terms of this license.
  10. //
  11. // You must not remove this notice, or any other, from this software.
  12. //
  13. // </copyright>
  14. //------------------------------------------------------------------------------
  15. using System.Configuration;
  16. using System.Collections;
  17. using System.Collections.Specialized;
  19. namespace System.Diagnostics
  20. {
  21.     [ConfigurationCollection(typeof(SwitchElement))]
  22.     internal class SwitchElementsCollection : ConfigurationElementCollection
  23.     {
  24.        
  25.         public new SwitchElement this[string name]
  26.         {
  27.             get { return (SwitchElement)BaseGet(name); }
  28.         }
  29.        
  30.         public override ConfigurationElementCollectionType CollectionType {
  31.             get { return ConfigurationElementCollectionType.AddRemoveClearMap; }
  32.         }
  33.        
  34.         protected override ConfigurationElement CreateNewElement()
  35.         {
  36.             return new SwitchElement();
  37.         }
  38.        
  39.         protected override object GetElementKey(ConfigurationElement element)
  40.         {
  41.             return ((SwitchElement)element).Name;
  42.         }
  43.     }
  44.    
  45.     internal class SwitchElement : ConfigurationElement
  46.     {
  47.         private static readonly ConfigurationPropertyCollection _properties;
  48.         private static readonly ConfigurationProperty _propName = new ConfigurationProperty("name", typeof(string), "", ConfigurationPropertyOptions.IsRequired | ConfigurationPropertyOptions.IsKey);
  49.         private static readonly ConfigurationProperty _propValue = new ConfigurationProperty("value", typeof(string), null, ConfigurationPropertyOptions.IsRequired);
  50.        
  51.         private Hashtable _attributes;
  52.        
  53.         static SwitchElement()
  54.         {
  55.             _properties = new ConfigurationPropertyCollection();
  56.             _properties.Add(_propName);
  57.             _properties.Add(_propValue);
  58.         }
  59.        
  60.         public Hashtable Attributes {
  61.             get {
  62.                 if (_attributes == null)
  63.                     _attributes = new Hashtable(StringComparer.OrdinalIgnoreCase);
  64.                 return _attributes;
  65.             }
  66.         }
  67.        
  68.         [ConfigurationProperty("name", DefaultValue = "", IsRequired = true, IsKey = true)]
  69.         public string Name {
  70.             get { return (string)this[_propName]; }
  71.         }
  72.        
  73.         protected override ConfigurationPropertyCollection Properties {
  74.             get { return _properties; }
  75.         }
  76.        
  77.         [ConfigurationProperty("value", IsRequired = true)]
  78.         public string Value {
  79.             get { return (string)this[_propValue]; }
  80.         }
  81.        
  82.         protected override bool OnDeserializeUnrecognizedAttribute(string name, string value)
  83.         {
  84.             ConfigurationProperty _propDynamic = new ConfigurationProperty(name, typeof(string), value);
  85.             _properties.Add(_propDynamic);
  86.             base[_propDynamic] = value;
  87.             // Add them to the property bag
  88.             Attributes.Add(name, value);
  89.             return true;
  90.         }
  91.        
  92.         internal void ResetProperties()
  93.         {
  94.             // blow away any UnrecognizedAttributes that we have deserialized earlier
  95.             if (_attributes != null) {
  96.                 _attributes.Clear();
  97.                 _properties.Clear();
  98.                 _properties.Add(_propName);
  99.                 _properties.Add(_propValue);
  100.             }
  101.         }
  102.     }
  103. }

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