ConfigXmlDocument
Wraps the corresponding XmlDocument type and also carries the necessary information for reporting file-name and line numbers.
using System.Configuration.Internal;
using System.IO;
using System.Xml;
namespace System.Configuration
{
public sealed class ConfigXmlDocument : XmlDocument, IConfigErrorInfo
{
private XmlTextReader _reader;
private int _lineOffset;
private 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 => ((IConfigErrorInfo)this).LineNumber;
public string Filename => _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;
}
}
}
public void LoadSingleElement(string filename, XmlTextReader sourceReader)
{
_filename = filename;
_lineOffset = sourceReader.LineNumber;
string s = sourceReader.ReadOuterXml();
try {
_reader = new XmlTextReader(new StringReader(s), 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);
}
}
}