Parameter is not valid about twaindotnet HOT 1 OPEN

    public Bitmap RenderToBitmap()
    {
        Bitmap bitmap = new Bitmap(_rectangle.Width, _rectangle.Height);

        using (Graphics graphics = Graphics.FromImage(bitmap))
        {
            IntPtr hdc = graphics.GetHdc();

            try
            {
                Gdi32Native.SetDIBitsToDevice(hdc, 0, 0, _rectangle.Width, _rectangle.Height,
                    0, 0, 0, _rectangle.Height, _pixelInfoPointer, _bitmapPointer, 0);
            }
            catch (Exception ex)
            {
                log.Error("SetDIBitsToDevice error: " + ex.ToString());
            }
            finally
            {
                graphics.ReleaseHdc(hdc);
            }
        }

        if (_bitmapInfo.XPelsPerMeter > 0 && _bitmapInfo.YPelsPerMeter > 0)
        {
            bitmap.SetResolution(PpmToDpi(_bitmapInfo.XPelsPerMeter), PpmToDpi(_bitmapInfo.YPelsPerMeter));
        }

        Bitmap answer = new Bitmap(bitmap);
        return answer;
    }