System.Windows.Forms.HexBox.UpdateVisibilityBytes C# (CSharp) Method

        void UpdateVisibilityBytes()
        {
            if(_byteProvider == null || _byteProvider.Length == 0)
                return;

            _startByte = (_scrollVpos+1) * _iHexMaxHBytes - _iHexMaxHBytes;
            _endByte = (long)Math.Min(_byteProvider.Length - 1, _startByte + _iHexMaxBytes);
        }