System.BitConverter.ToString C# (CSharp) Метод

        public static String ToString (byte[] value, int startIndex, int length) {            

            if (value == null) {
                throw new ArgumentNullException("byteArray");
            }

            int arrayLen = value.Length;
            if (startIndex < 0 || (startIndex >= arrayLen && startIndex > 0)) {
                throw new ArgumentOutOfRangeException("startIndex", Environment.GetResourceString("ArgumentOutOfRange_StartIndex")); 
            }

            int realLength = length;
            if (realLength<0) {
                throw new ArgumentOutOfRangeException("length", Environment.GetResourceString("ArgumentOutOfRange_GenericPositive"));
            }

            if (startIndex > arrayLen - realLength) {
                throw new ArgumentException(Environment.GetResourceString("Arg_ArrayPlusOffTooSmall"));
            }

            if (realLength == 0) {
                return string.Empty;
            }
            
            char[] chArray = new char[realLength*3];
            int i = 0;
            int index = startIndex;
            for (i = 0; i < realLength*3; i += 3) {
                byte b = value[index++];
                chArray[i]= GetHexValue(b/16);
                chArray[i+1] = GetHexValue(b%16);
                chArray[i+2] = '-';
            }

            // We don't need the last '-' character
            return new String(chArray, 0, chArray.Length - 1);
        }