public unsafe override int GetByteCount(char[] chars, int index, int count)
{
// Validate input parameters
if (chars == null)
throw new ArgumentNullException(nameof(chars), SR.ArgumentNull_Array);
if (index < 0 || count < 0)
throw new ArgumentOutOfRangeException((index < 0 ? nameof(index): nameof(count)), SR.ArgumentOutOfRange_NeedNonNegNum);
if (chars.Length - index < count)
throw new ArgumentOutOfRangeException(nameof(chars), SR.ArgumentOutOfRange_IndexCountBuffer);
Contract.EndContractBlock();
// If no input, return 0, avoid fixed empty array problem
if (chars.Length == 0)
return 0;
// Just call the pointer version
fixed (char* pChars = chars)
return GetByteCount(pChars + index, count, null);
}