ConfigXmlDocument.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / Sys / System / Configuration / ConfigXmlDocument.cs / 1 / ConfigXmlDocument.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Configuration 
{ 
    using System.Configuration.Internal;
    using System.IO; 
    using System.Xml;
    using System.Security.Permissions;

    // ConfigXmlDocument - the default Xml Document doesn't track line numbers, and line 
    // numbers are necessary to display source on config errors.
    // These classes wrap corresponding System.Xml types and also carry 
    // the necessary information for reporting filename / line numbers. 
    // Note: these classes will go away if webdata ever decides to incorporate line numbers
    // into the default XML classes.  This class could also go away if webdata brings back 
    // the UserData property to hang any info off of any node.
    [PermissionSet(SecurityAction.LinkDemand, Name="FullTrust")]
    public sealed class ConfigXmlDocument : XmlDocument, IConfigErrorInfo {
        XmlTextReader   _reader; 
        int             _lineOffset;
        string          _filename; 
 
        int IConfigErrorInfo.LineNumber {
            get { 
                if (_reader == null) {
                    return 0;
                }
 
                if (_lineOffset > 0) {
                    return _reader.LineNumber + _lineOffset - 1; 
                } 

                return _reader.LineNumber; 
            }
        }

        public int LineNumber { get { return ((IConfigErrorInfo)this).LineNumber; } } 

        public string Filename { 
            get { return ConfigurationException.SafeFilename(_filename); } 
        }
 
        string IConfigErrorInfo.Filename {
            get { return _filename; }
        }
 
        public override void Load(string filename) {
            _filename = filename; 
            try { 
                _reader = new XmlTextReader(filename);
                _reader.XmlResolver = null; 
                base.Load(_reader);
            }
            finally {
                if (_reader != null) { 
                    _reader.Close();
                    _reader = null; 
                } 
            }
        } 

#if UNUSED_CODE
        internal XmlNode ReadConfigNode(string filename, XmlTextReader sourceReader) {
            _filename = filename; 
            _reader = sourceReader; // pull line numbers from original reader
            try { 
                return base.ReadNode(sourceReader); 
            }
            finally { 
                _reader = null;
            }
        }
#endif 

        public void LoadSingleElement(string filename, XmlTextReader sourceReader) { 
            _filename = filename; 
            _lineOffset = sourceReader.LineNumber;
            string outerXml = sourceReader.ReadOuterXml(); 

            try {
                _reader = new XmlTextReader(new StringReader(outerXml), sourceReader.NameTable);
                base.Load(_reader); 
            }
            finally { 
                if (_reader != null) { 
                    _reader.Close();
                    _reader = null; 
                }
            }
        }
 
        public override XmlAttribute CreateAttribute( string prefix, string localName, string namespaceUri ) {
            return new ConfigXmlAttribute( _filename, LineNumber, prefix, localName, namespaceUri, this ); 
        } 
        public override XmlElement CreateElement( string prefix, string localName, string namespaceUri) {
            return new ConfigXmlElement( _filename, LineNumber, prefix, localName, namespaceUri, this ); 
        }
        public override XmlText CreateTextNode(String text) {
            return new ConfigXmlText( _filename, LineNumber, text, this );
        } 
        public override XmlCDataSection CreateCDataSection(String data) {
            return new ConfigXmlCDataSection( _filename, LineNumber, data, this ); 
        } 
        public override XmlComment CreateComment(String data) {
            return new ConfigXmlComment( _filename, LineNumber, data, this ); 
        }
        public override XmlSignificantWhitespace CreateSignificantWhitespace(String data) {
            return new ConfigXmlSignificantWhitespace( _filename, LineNumber, data, this );
        } 
        public override XmlWhitespace CreateWhitespace(String data) {
            return new ConfigXmlWhitespace( _filename, LineNumber, data, this ); 
        } 
    }
}

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