System.Text.Latin1Encoding.GetMaxByteCount C# (CSharp) Method

        public override int GetMaxByteCount(int charCount)
        {
            if (charCount < 0)
               throw new ArgumentOutOfRangeException("charCount",
                    Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum"));

            // Characters would be # of characters + 1 in case high surrogate is ? * max fallback
            long byteCount = (long)charCount + 1;

            if (EncoderFallback.MaxCharCount > 1)
                byteCount *= EncoderFallback.MaxCharCount;

            // 1 to 1 for most characters.  Only surrogates with fallbacks have less.

            if (byteCount > 0x7fffffff)
                throw new ArgumentOutOfRangeException("charCount", Environment.GetResourceString("ArgumentOutOfRange_GetByteCountOverflow"));
            return (int)byteCount;
        }