System.Xml.CharEntityEncoderFallbackBuffer.Fallback C# (CSharp) Méthode

        public override bool Fallback( char charUnknownHigh, char charUnknownLow, int index ) {
            // check input surrogate pair
            if ( !char.IsSurrogatePair( charUnknownHigh, charUnknownLow ) ) {
                throw XmlConvert.CreateInvalidSurrogatePairException( charUnknownHigh, charUnknownLow );
            }

            // If we are already in fallback, throw, it's probably at the suspect character in charEntity
            if ( charEntityIndex >= 0 ) {
                (new EncoderExceptionFallbackBuffer()).Fallback( charUnknownHigh, charUnknownLow, index );
            }
 
            if ( parent.CanReplaceAt( index ) ) {
                // Create the replacement character entity
                charEntity = string.Format( CultureInfo.InvariantCulture, "&#x{0:X};", new object[] { char.ConvertToUtf32( charUnknownHigh, charUnknownLow ) } );
                charEntityIndex = 0;
                return true;
            }
            else {
                EncoderFallbackBuffer errorFallbackBuffer = ( new EncoderExceptionFallback() ).CreateFallbackBuffer();
                errorFallbackBuffer.Fallback( charUnknownHigh, charUnknownLow, index );
                return false;
            }
        }