internal void WriteSurrogateChar( char lowChar, char highChar ) {
if ( ( (int)lowChar < SurLowStart || (int)lowChar > SurLowEnd ) ||
( (int)highChar < SurHighStart || (int)highChar > SurHighEnd ) ) {
throw XmlConvert.CreateInvalidSurrogatePairException( lowChar, highChar );
}
textWriter.Write( highChar );
textWriter.Write( lowChar );
}