C # generates two-dimensional code (with decoding)

Using system;using system.collections.generic;using system.componentmodel;using system.data;using System.Drawing; Using system.linq;using system.text;using system.windows.forms;using system.collections;using com.google.zxing;//    Need to download using system.text.regularexpressions;using Bytematrix = com.google.zxing.common.bytematrix;namespace qr code from the Web        Public partial class Form1:form {public Form1 () {InitializeComponent (); }//Generate barcode private void Button1_Click (object sender, EventArgs e) {regex RG = new Regex ("^ [0-9]            {13}$ "); if (!RG.                IsMatch (TextBox1.Text)) {MessageBox.Show ("This example uses EAN_13 encoding and requires 13 digits to be entered");            Return                } try {Multiformatwriter mutiwriter = new Com.google.zxing.MultiFormatWriter ();                Bytematrix BM = Mutiwriter.encode (TextBox1.Text, com.google.zxing.BarcodeFormat.EAN_13, 363, 150); Bitmap img = BM.                Tobitmap ();                pictureBox1.Image = img; Automatically save picture to current directory string filename = System.Environment.CurrentDirectory + "\\EAN_13" + DateTime.Now.Ticks.ToStr                ING () + ". jpg"; Img.                Save (filename, System.Drawing.Imaging.ImageFormat.Jpeg); Label2.            Text = "Picture saved to:" + filename; } catch (Exception ee) {MessageBox.Show (EE.            Message);            }}//Generate two-dimensional code private void button2_click (object sender, EventArgs e) {try                {Multiformatwriter Mutiwriter = new Com.google.zxing.MultiFormatWriter ();                Bytematrix BM = Mutiwriter.encode (TextBox1.Text, Com.google.zxing.BarcodeFormat.QR_CODE, 300, 300); Bitmap img = BM.                Tobitmap ();                pictureBox1.Image = img;                string filename = System.Environment.CurrentDirectory + "\\QR" + DateTime.Now.Ticks.ToString () + ". jpg"; Img. SavE (filename, System.Drawing.Imaging.ImageFormat.Jpeg); Label2.            Text = "Picture saved to:" + filename; } catch (Exception ee) {MessageBox.Show (EE.             Message);            }}//Generate two-dimensional code with picture private void Button3_Click (object sender, EventArgs e) {try                {Multiformatwriter Mutiwriter = new Com.google.zxing.MultiFormatWriter ();                Hashtable hint = new Hashtable (); Hint.                ADD (Encodehinttype.character_set, "UTF-8"); Hint.                ADD (Encodehinttype.error_correction, com.google.zxing.qrcode.decoder.errorcorrectionlevel.h);                Bytematrix BM = Mutiwriter.encode (TextBox1.Text, Com.google.zxing.BarcodeFormat.QR_CODE, +, hint); Bitmap img = BM.                Tobitmap ();                Image middlimg = qrmiddleimg.image; System.Drawing.Size realsize = mutiwriter.getencodesize (TextBox1.Text, Com.google.zxing.BarcodeFormat.QR_CODE, 300, 300);                Calculate the size and position of the inserted picture int MIDDLEIMGW = math.min ((int) (realsize.width/3.5), middlimg.width);                int middleimgh = math.min ((int) (realsize.height/3.5), middlimg.height); int MIDDLEIMGL = (img.                WIDTH-MIDDLEIMGW)/2; int MIDDLEIMGT = (img.                HEIGHT-MIDDLEIMGH)/2; The IMG is converted to BMP format, otherwise the graphics object cannot be created later Bitmap bmpimg = new Bitmap (img. Width, IMG.                Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb); using (Graphics g = graphics.fromimage (bmpimg)) {G.interpolationmode = SYSTEM.DRAWING.D                    Rawing2D.InterpolationMode.HighQualityBicubic;                    G.smoothingmode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;                    g.compositingquality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;                G.drawimage (IMG, 0, 0); }//Insert picture in QR code System.drawIng.                Graphics mygraphic = System.Drawing.Graphics.FromImage (bmpimg);                White-bottomed Mygraphic.fillrectangle (Brushes.white, MIDDLEIMGL, Middleimgt, MIDDLEIMGW, MIDDLEIMGH);                Mygraphic.drawimage (middlimg, MIDDLEIMGL, Middleimgt, MIDDLEIMGW, MIDDLEIMGH);                pictureBox1.Image = bmpimg; Automatically save the picture to the current directory string filename = System.Environment.CurrentDirectory + "\\QR" + DateTime.Now.Ticks.ToString (                ) + ". jpg"; Bmpimg.                Save (filename, System.Drawing.Imaging.ImageFormat.Jpeg); Label2.            Text = "Picture saved to:" + filename; } catch (Exception ee) {MessageBox.Show (EE.             Message);        }} String opfilepath = ""; Select the intermediate picture to generate private void Picturebox2_click (object sender, EventArgs e) {Openfiledialog1.filter            = "Picture file |*.bmp;*.jpg;*.png;*.ico";          if (openfiledialog1.showdialog () = = DialogResult.OK)  {Opfilepath = Openfiledialog1.filename;                Image img = image.fromfile (opfilepath);            Qrmiddleimg.image = img; }}//Select the picture to decode private void Button4_Click (object sender, EventArgs e) {Openfiledia Log1.            Filter = "picture file |*.bmp;*.jpg;*.png;*.ico";                if (openfiledialog1.showdialog () = = DialogResult.OK) {Opfilepath = Openfiledialog1.filename;            Picturebox2.imagelocation = Opfilepath; }}//decoding the QR code private void Button5_click (object sender, EventArgs e) {Multiformatrea            Der Mutireader = new Com.google.zxing.MultiFormatReader ();            Bitmap img = (Bitmap) bitmap.fromfile (Opfilepath);            if (img = = null) return; Luminancesource ls = new Rgbluminancesource (IMG, IMG. Width, IMG.            Height); Binarybitmap BB = new Binarybitmap (new Com.google.zxing.common.HybridBinarizer (LS));            Note must be UTF-8 encoded Hashtable hints = new Hashtable (); Hints.            ADD (Encodehinttype.character_set, "UTF-8");            Result r = Mutireader.decode (BB, hints);        richTextBox1.Text = R.text; }    }}

C # generates two-dimensional code (with decoding)