VS2010 C#窗体应用程序利用QRCode生成二维码

一时失言乱红尘 2023-06-30 01:38 86阅读 0赞

## 1.引入ThoughtWorks.QRCode.dll类库到程序中 ##

[ThoughtWorks.QRCode.dll下载地址][ThoughtWorks.QRCode.dll]  
在工程的右边解决方案中添加引用–>浏览–>找到下载后存放ThoughtWorks.QRCode.dll路径，然后选择ThoughtWorks.QRCode.dll类库---->确定  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 1]

## 2.建立MyQR.cs类 用来生成和解析二维码 ##

using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Runtime.InteropServices;
    using ThoughtWorks.QRCode.Codec;
    using System.Drawing;
    using ThoughtWorks.QRCode.Codec.Data;
     
    namespace ProductQR
    {
        public class MyQR
        {
            /// <summary>
            /// 生成二维码
            /// </summary>
            /// <param name="barcodeText">文本</param>
            /// <returns>图片</returns>
            public Bitmap BarcodeImage(String barcodeText)
            {
     
                QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
                qrCodeEncoder.QRCodeVersion = 0;
                Bitmap img = qrCodeEncoder.Encode(barcodeText, Encoding.UTF8);//指定utf-8编码， 支持中文
                return img;
     
                //string httpFileName = System.Environment.CurrentDirectory;
                //string fileName = "/a.jpg";
                //img.Save(httpFileName + fileName);//保存位图 
            }
     
            /// <summary>
            /// 解析二维码文本
            /// </summary>
            /// <param name="bitmap">图片对象</param>
            /// <returns></returns>
            public string QRCodeDecoderUtil(Bitmap bitmap)
            {
                QRCodeDecoder decoder = new QRCodeDecoder();
                string decodedString = "";
                try
                {
                    decodedString = decoder.decode(new QRCodeBitmapImage(bitmap), Encoding.UTF8);//指定utf-8编码， 支持中文  
                }
                catch (Exception e)
                {
                    return "请先生成二维码！";
                }
                return decodedString;
            }
        } 
    }

测试类Form1.cs

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;
     
    namespace ProductQR
    {
        public partial class Form1 : Form
        {
            public Form1()
            {
                InitializeComponent();
            }
     
            private void button1_Click(object sender, EventArgs e)
            {
                MyQR d = new MyQR();
                Bitmap b=  d.BarcodeImage(textBox1.Text.ToString());
                MessageBox.Show("ok!");
                pictureBox1.Image = b;
            }
     
            private void button2_Click(object sender, EventArgs e)
            {
                MyQR d = new MyQR();
                MessageBox.Show(d.QRCodeDecoderUtil((Bitmap)this.pictureBox1.Image));
            }
        }
    }

[ThoughtWorks.QRCode.dll]: https://download.csdn.net/download/zcn596785154/12112923
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200113162328325.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200113162451981.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pjbjU5Njc4NTE1NA==,size_16,color_FFFFFF,t_70