System.Runtime.Serialization.XmlSerializableReader.BeginRead C# (CSharp) Method

        internal void BeginRead(XmlReaderDelegator xmlReader)
        {
            if (xmlReader.NodeType != XmlNodeType.Element)
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializerReadContext.CreateUnexpectedStateException(XmlNodeType.Element, xmlReader));
            _xmlReader = xmlReader;
            _startDepth = xmlReader.Depth;
            _innerReader = xmlReader.UnderlyingReader;
            _isRootEmptyElement = InnerReader.IsEmptyElement;
        }

        internal static object ReadIXmlSerializable(XmlSerializableReader xmlSerializableReader, XmlReaderDelegator xmlReader, XmlDataContract xmlDataContract, bool isMemberType)
        {
            object obj = null;

            xmlSerializableReader.BeginRead(xmlReader);
            if (isMemberType && !xmlDataContract.HasRoot)
            {
                xmlReader.Read();
                xmlReader.MoveToContent();
            }
            if (xmlDataContract.UnderlyingType == Globals.TypeOfXmlElement)
            {
                if (!xmlReader.IsStartElement())
                {
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(CreateUnexpectedStateException(XmlNodeType.Element, xmlReader));
                }
                XmlDocument xmlDoc = new XmlDocument();
                obj = (XmlElement)xmlDoc.ReadNode(xmlSerializableReader);
            }
            else if (xmlDataContract.UnderlyingType == Globals.TypeOfXmlNodeArray)
            {
                obj = XmlSerializableServices.ReadNodes(xmlSerializableReader);
            }
            else
            {
                IXmlSerializable xmlSerializable = xmlDataContract.CreateXmlSerializableDelegate();
                xmlSerializable.ReadXml(xmlSerializableReader);
                obj = xmlSerializable;
            }
            xmlSerializableReader.EndRead();
            return(obj);
        }