System.Text.EncoderReplacementFallbackBuffer.Fallback C# (CSharp) Метод

        public override bool Fallback(char charUnknownHigh, char charUnknownLow, int index)
        {
            // Double check input surrogate pair
            if (!Char.IsHighSurrogate(charUnknownHigh))
                throw new ArgumentOutOfRangeException("charUnknownHigh",
                    Environment.GetResourceString("ArgumentOutOfRange_Range",
                    0xD800, 0xDBFF));

            if (!Char.IsLowSurrogate(charUnknownLow))
                throw new ArgumentOutOfRangeException("CharUnknownLow",
                    Environment.GetResourceString("ArgumentOutOfRange_Range",
                    0xDC00, 0xDFFF));

            // If we had a buffer already we're being recursive, throw, it's probably at the suspect
            // character in our array.
            if (fallbackCount >= 1)
                ThrowLastCharRecursive(Char.ConvertToUtf32(charUnknownHigh, charUnknownLow));

            // Go ahead and get our fallback
            fallbackCount = strDefault.Length;
            fallbackIndex = -1;

            return fallbackCount != 0;
        }

        public void FallbackRecursiveError()
        {
            Buffer b = NewInstance();

            b.Fallback('X', 0);
            b.Fallback('X', 0);
        }