VS2015 C#利用QrCodeNet生成QR Code

Step by step Create QR Code with QrCodeNet

Step.1 新建項目

Step.2 在窗口中拖入一個Button

Step.3 下載QrCodeNet代碼，解壓QrCodeNetsourceCodeqrcodenetGma.QrCodeNet ugetlib et45Gma.QrCodeNet.Encoding.dll

Step.4 加入參考（引用）

Step.5 添中using

using Gma.QrCodeNet.Encoding;
using Gma.QrCodeNet.Encoding.Windows.Render;
using System.IO;

Step.6 粘貼代碼

public partial class Form1 : Form
    {
        const string str = "160-12345678-8888,AbcdefgHijklmnOpqRst,2018/05/21";
        public Form1()
        {
            InitializeComponent();
        }
        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);
            ShowCode(e.Graphics);
        }
        private void ShowCode(Graphics g)
        {
            QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.L);
            QrCode qrCode = qrEncoder.Encode(str);

            FixedModuleSize moduleSize = new FixedModuleSize(2, QuietZoneModules.Two);
            GraphicsRenderer render = new GraphicsRenderer(moduleSize, Brushes.Black, Brushes.White);
            render.Draw(g, qrCode.Matrix);
        }

        private void btnSaveFile_Click(object sender, EventArgs e)
        {
            QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.L);
            QrCode code = new QrCode();
            qrEncoder.TryEncode(str, out code);

            const int modelSizeInPixels = 4;

            GraphicsRenderer render = new GraphicsRenderer(
                new FixedModuleSize(modelSizeInPixels, QuietZoneModules.Two),
                Brushes.Black,
                Brushes.White);

            string fileName = Application.ExecutablePath + "New.png";

            using (FileStream stream = new FileStream(fileName, FileMode.Create))
            {
                render.WriteToStream(code.Matrix, System.Drawing.Imaging.ImageFormat.Png, stream);
            }
        }
    }

Step.7 運行結果

參考資料:

QR Code

http://www.qrcode.com/zh/about/

C#利用QrCode.Net生成二维码（Qr码）

https://www.cnblogs.com/tianma3798/p/4054270.html

利用QrCode.Net生成二维码 asp.net mvc c#

https://blog.csdn.net/paolei/article/details/12584295

草料二维码

https://cli.im/

VB.Net创建和调用DLL教程

https://blog.csdn.net/namecgc/article/details/77940698