System.Xml.XmlValidatingReaderImpl.XmlValidatingReaderImpl C# (CSharp) Method

        internal XmlValidatingReaderImpl(XmlReader reader, ValidationEventHandler settingsEventHandler, bool processIdentityConstraints)
        {
            XmlAsyncCheckReader asyncCheckReader = reader as XmlAsyncCheckReader;
            if (asyncCheckReader != null)
            {
                reader = asyncCheckReader.CoreReader;
            }
            _outerReader = this;
            _coreReader = reader;
            _coreReaderImpl = reader as XmlTextReaderImpl;
            if (_coreReaderImpl == null)
            {
                XmlTextReader tr = reader as XmlTextReader;
                if (tr != null)
                {
                    _coreReaderImpl = tr.Impl;
                }
            }
            if (_coreReaderImpl == null)
            {
                throw new ArgumentException(SR.Arg_ExpectingXmlTextReader, nameof(reader));
            }
            _coreReaderImpl.XmlValidatingReaderCompatibilityMode = true;
            _coreReaderNSResolver = reader as IXmlNamespaceResolver;
            _processIdentityConstraints = processIdentityConstraints;

#pragma warning disable 618

            _schemaCollection = new XmlSchemaCollection(_coreReader.NameTable);

#pragma warning restore 618

            _schemaCollection.XmlResolver = GetResolver();

            _eventHandling = new ValidationEventHandling(this);
            if (settingsEventHandler != null)
            {
                _eventHandling.AddHandler(settingsEventHandler);
            }
            _coreReaderImpl.ValidationEventHandling = _eventHandling;
            _coreReaderImpl.OnDefaultAttributeUse = new XmlTextReaderImpl.OnDefaultAttributeUseDelegate(ValidateDefaultAttributeOnUse);

            _validationType = ValidationType.DTD;
            SetupValidation(ValidationType.DTD);
        }