BarcodeWriter writer = new BarcodeWriter
    {
        Format = BarcodeFormat.QR_CODE,
        Renderer = new BitmapRenderer
        {
            Foreground = Color.Black
        },
        Options = new ZXing.QrCode.QrCodeEncodingOptions
        {
            DisableECI = true,
            Height = height,
            Width = width,
            Margin = 0,
            CharacterSet = \"UTF-8\",
            ErrorCorrection = ErrorCorrectionLevel.M
        }
    };

    Bitmap bitmap = writer.Write(url);
    if (!string.IsNullOrEmpty(userFace))
    {
        Bitmap bits = (System.Drawing.Bitmap)System.Drawing.Image.FromFile(userFace);
        if (bits != null)
        {                   
            //剪裁一个80*80的Logo图片
            ImageCut img = new ImageCut(0, 0, 80, 80);
            System.Drawing.Bitmap icon = img.KiCut(bits);
            //userFace_b.jpg是一个边框的图片
            Bitmap bits2 = new System.Drawing.Bitmap((System.Drawing.Bitmap)System.Drawing.Image.FromFile(Application.StartupPath + \"/user/userFace_b.jpg\"), 84, 84);
            if (icon != null)
            {
                try
                { 
                    //画了2个边框，一个是logo,一个在logo周围加了一个边框
                    using (var graphics = System.Drawing.Graphics.FromImage(bitmap))
                    {
                        graphics.DrawImage(bits2, (bitmap.Width - bits2.Width) / 2, (bitmap.Height - bits2.Height) / 2);
                        graphics.DrawImage(icon, (bitmap.Width - icon.Width) / 2, (bitmap.Height - icon.Height) / 2);

                    }

                }
                catch (Exception ex)
                {

                }
                finally
                {
                    icon.Dispose();
                    GC.Collect();

                }
            }
            bitmap.Save(fileName, ImageFormat.Jpeg);
        }

    }

    return bitmap;
}