<PackageReference Include="System.Configuration.ConfigurationManager" Version="9.0.3" />

ConfigXmlCDataSection

using System.Configuration.Internal; using System.Xml; namespace System.Configuration { internal sealed class ConfigXmlCDataSection : XmlCDataSection, IConfigErrorInfo { private string _filename; private int _line; int IConfigErrorInfo.LineNumber { get { return _line; } } string IConfigErrorInfo.Filename { get { return _filename; } } public ConfigXmlCDataSection(string filename, int line, string data, XmlDocument doc) : base(data, doc) { _line = line; _filename = filename; } public override XmlNode CloneNode(bool deep) { XmlNode xmlNode = base.CloneNode(deep); ConfigXmlCDataSection configXmlCDataSection = xmlNode as ConfigXmlCDataSection; if (configXmlCDataSection != null) { configXmlCDataSection._line = _line; configXmlCDataSection._filename = _filename; } return xmlNode; } } }