1 public partial class Form1 : Form
 2     {
 3         const string str = "160-12345678-8888,AbcdefgHijklmnOpqRst,2018/05/21";
 4         public Form1()
 5         {
 6             InitializeComponent();
 7         }
 8         protected override void OnPaint(PaintEventArgs e)
 9         {
10             base.OnPaint(e);
11             ShowCode(e.Graphics);
12         }
13         private void ShowCode(Graphics g)
14         {
15             QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.L);
16             QrCode qrCode = qrEncoder.Encode(str);
17
18             FixedModuleSize moduleSize = new FixedModuleSize(2, QuietZoneModules.Two);
19             GraphicsRenderer render = new GraphicsRenderer(moduleSize, Brushes.Black, Brushes.White);
20             render.Draw(g, qrCode.Matrix);
21         }
22
23         private void btnSaveFile_Click(object sender, EventArgs e)
24         {
25             QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.L);
26             QrCode code = new QrCode();
27             qrEncoder.TryEncode(str, out code);
28
29             const int modelSizeInPixels = 4;
30
31             GraphicsRenderer render = new GraphicsRenderer(
32                 new FixedModuleSize(modelSizeInPixels, QuietZoneModules.Two),
33                 Brushes.Black,
34                 Brushes.White);
35
36             string fileName = Application.ExecutablePath + "New.png";
37
38             using (FileStream stream = new FileStream(fileName, FileMode.Create))
39             {
40                 render.WriteToStream(code.Matrix, System.Drawing.Imaging.ImageFormat.Png, stream);
41             }
42         }
43     }