csharp: QR Code Barcode

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/// <summary>         ///         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         protected void Page_Load(object sender, EventArgs e)         {             if (!IsPostBack)             {                 qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;                 int scale = 4;                 qrCodeEncoder.QRCodeScale = scale;                 int version = 7;                 qrCodeEncoder.QRCodeVersion = version;                 qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;                 System.Drawing.Image image;                 String data = Request.Url.AbsoluteUri;// "http://www.dusystem.com/  涂聚文";                 image = qrCodeEncoder.Encode(data);                 //picEncode.Image = image;                   string filename = "geovinduQrcode.jpg";                 string file = Server.MapPath(filename);                 image.Save(file);                 this.Image1.ImageUrl = filename;               }         }         /// <summary>         ///         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         protected void Button1_Click(object sender, EventArgs e)         {             QRCodeEncoder encoder = new QRCodeEncoder();             encoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.H; // 30%             encoder.QRCodeScale = 10;             System.Drawing.Image img = encoder.Encode("www.dusystem.com");             string filename = "geovinduQrcodeVi.jpg";             string file = Server.MapPath(filename);             string log = Server.MapPath("nasa.bmp");               System.Drawing.Image logo = System.Drawing.Image.FromFile(log);             int left = (img.Width / 2) - (logo.Width / 2);             int top = (img.Height / 2) - (logo.Height / 2);             Graphics g = Graphics.FromImage(img);             g.DrawImage(logo, new Point(left, top));             string filename1 = "QrcodeVi.jpg";             img.Save(Server.MapPath(filename1));             this.Image2.ImageUrl = filename1;         }

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/// <summary>        ///        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        protected void Page_Load(object sender, EventArgs e)        {            if (!IsPostBack)            {                  System.Drawing.Image img;                Bitmap temp = new Bitmap(1, 1);                temp.SetPixel(0, 0, Color.Black);                img = (System.Drawing.Image)temp;                int W = 300;                int H = 150;                b.Alignment = BarcodeLib.AlignmentPositions.CENTER;                b.Alignment = BarcodeLib.AlignmentPositions.CENTER;                BarcodeLib.TYPE type = BarcodeLib.TYPE.UNSPECIFIED;                type = BarcodeLib.TYPE.CODE128;                b.LabelPosition = BarcodeLib.LabelPositions.BOTTOMCENTER;                b.IncludeLabel = true;                b.RotateFlipType = (RotateFlipType)Enum.Parse(typeof(RotateFlipType), "RotateNoneFlipNone", true);                  img = b.Encode(type, "00800900000011", Color.Black, Color.White, W, H);                string filename = "geovindu.jpg";                string file = Server.MapPath(filename);                img.Save(file);                this.Image1.ImageUrl = filename;            }        }