93 lines
3.4 KiB
C#
93 lines
3.4 KiB
C#
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using System.Configuration;
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using System.Text;
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using System.Xml;
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namespace System.IdentityModel.Configuration
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{
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#pragma warning disable 1591
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public partial class ConfigurationElementInterceptor : ConfigurationElement
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{
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private XmlDocument elementXml;
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protected override void DeserializeElement( XmlReader reader, bool serializeCollectionKey )
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{
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elementXml = new XmlDocument();
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elementXml.LoadXml( reader.ReadOuterXml() );
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// Create a new XmlTextReader so this element can be loaded
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// by the framework.
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using ( XmlReader newReader = XmlDictionaryReader.CreateTextReader( Encoding.UTF8.GetBytes( elementXml.DocumentElement.OuterXml ), XmlDictionaryReaderQuotas.Max ) )
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{
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newReader.Read();
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base.DeserializeElement( newReader, serializeCollectionKey );
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}
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}
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// There are parts in the configuration where users can specify arbitrary elements and attributes.
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// For example, when loading a custom token handler. The interceptor is implemented to
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// specifically handle these cases. So return true when the Framework detects a unrecognized element
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// or attribute to keep the parser running.
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protected override bool OnDeserializeUnrecognizedAttribute( string name, string value )
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{
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return true;
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}
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protected override bool OnDeserializeUnrecognizedElement( string elementName, XmlReader reader )
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{
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return true;
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}
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//
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// The Reset method is called in the nested vdir scenario,
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// where the child inherits the parent's config section.
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// The sequence of calls is as follows:
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// 1. Application accesses the section in the child app
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// 2. The config system walks up the inheritance chain and finds that it can instantiate the section at the parent level.
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// 3. The config system populates the section with the values from the parent, including setting the custom XML property.
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// 4. Now, the config system tries to instantiage the section at the child level. It creates a brand new instance of the section.
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// 5. The config system takes the parent section as a template and uses it to initialize the child (by calling this Reset method).
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// 6. Then the config system populates the child with values that were overwritten at the child level.
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//
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protected override void Reset( ConfigurationElement parentElement )
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{
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base.Reset( parentElement );
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Reset( (ConfigurationElementInterceptor)parentElement );
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}
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public XmlElement ElementAsXml
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{
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get
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{
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if ( elementXml != null )
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{
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return elementXml.DocumentElement;
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}
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return null;
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}
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}
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public XmlNodeList ChildNodes
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{
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get
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{
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if ( ( elementXml != null ) && ( ElementAsXml.ChildNodes.Count != 0 ) )
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{
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return ElementAsXml.ChildNodes;
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}
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return null;
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}
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}
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//
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// Copy custom properties from parent level.
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//
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private void Reset( ConfigurationElementInterceptor parentElement )
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{
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this.elementXml = parentElement.elementXml;
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}
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}
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#pragma warning restore 1591
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}
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