System.Xml.XmlTextEncoder.Write C# (CSharp) Méthode

        internal void Write( char ch ) {
            if ( cacheAttrValue ) {
                attrValue.Append( ch );
            }

            bool isAttrValue;
            unsafe {
                isAttrValue = ( xmlCharType.charProperties[ch] & XmlCharType.fAttrValue ) != 0; // xmlCharType.IsAttributeValueChar( ch )
            }
            if ( isAttrValue ) {
                textWriter.Write( ch );
            }
            else {
                switch ( ch ) {
                    case (char)0x9:
                        textWriter.Write( ch );
                        break;
                    case (char)0xA:
                    case (char)0xD:
                        if ( inAttribute ) {
                            WriteCharEntityImpl( ch );
                        }
                        else {
                            textWriter.Write( ch );
                        }
                        break;
                    case '<':
                        WriteEntityRefImpl( "lt" );
                        break;
                    case '>':
                        WriteEntityRefImpl( "gt" );
                        break;
                    case '&':
                        WriteEntityRefImpl( "amp" );
                        break;
                    case '\'':
                        if ( inAttribute && quoteChar == ch ) {
                            WriteEntityRefImpl( "apos" );
                        }
                        else {
                            textWriter.Write( '\'' );
                        }
                        break;
                    case '"':
                        if ( inAttribute && quoteChar == ch ) {
                            WriteEntityRefImpl( "quot" );
                        }
                        else {
                            textWriter.Write( '"' );
                        }
                        break;
                    default:
                        if ( (int)ch >= SurHighStart && (int)ch <= SurHighEnd ) {
                            throw new ArgumentException( Res.GetString( Res.Xml_InvalidSurrogateMissingLowChar ) );
                        }
                        else if ( (int)ch >= SurLowStart && (int)ch <= SurLowEnd ) {
                            throw XmlConvert.CreateInvalidHighSurrogateCharException( ch );
                        }
                        else {
                            Debug.Assert( ( ch < 0x20 && !xmlCharType.IsWhiteSpace( ch ) ) || ( ch > 0xFFFD ) );
                            WriteCharEntityImpl( ch );
                        }
                        break;
                }
            }
        }