笔记12：简易的二维码生成解析程序

　　　　首先得引用一个文件。直接看代码吧！

 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Drawing;
 5 using System.Data;
 6 using System.Text;
 7 using System.Windows.Forms;
 8 using ThoughtWorks.QRCode.Codec;
 9 using ThoughtWorks.QRCode.Codec.Data;
10
11 namespace 二维码生成器
12 {
13     public partial class Form1 : Form
14     {
15         public Form1()
16         {
17             InitializeComponent();
18         }
19         private void button1_Click(object sender, EventArgs e)
20         {
21             if (textBox1.Text.Trim() != "")
22             {
23                 string enCodeString = textBox1.Text;
24                 QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
25                 pictureBox1.Image = qrCodeEncoder.Encode(enCodeString, Encoding.UTF8);
26             }
27             else
28                 MessageBox.Show("请输入内容");
29         }
30
31         private void button2_Click(object sender, EventArgs e)
32         {
33             if (pictureBox1.Image != null)
34             {
35                 SaveFileDialog s = new SaveFileDialog();
36                 s.Title = "保存二维码图片";
37                 s.Filter = "图片文件(*.jpg)|*.jpg";
38                 if (s.ShowDialog() == DialogResult.OK)
39                     try
40                     {
41                         pictureBox1.Image.Save(s.FileName, System.Drawing.Imaging.ImageFormat.Jpeg);
42                         MessageBox.Show("保存成功");
43                     }
44                     catch { MessageBox.Show("保存失败"); }
45             }
46         }
47
48         //解析二维码
49         string filepath = "";
50         private void button4_Click(object sender, EventArgs e)
51         {
52             OpenFileDialog p = new OpenFileDialog();
53             p.Title = "请选择二维码文件";
54             p.Filter = "图片文件(*.jpg)|*.jpg";
55             p.Multiselect = false;
56             if (p.ShowDialog() == DialogResult.OK)
57             {
58                 filepath = p.FileName;
59                 System.Threading.Thread t = new System.Threading.Thread(ss);
60                 t.IsBackground = true;
61                 t.Start();
62             }
63         }
64         private void ss()
65         {
66             if (filepath != "")
67             {
68                 string tt = "";
69                 try
70                 {
71                     Invoke((EventHandler)delegate
72                     {
73                         pictureBox1.Image = new Bitmap(filepath);
74                     });
75                     //pictureBox1.Size = new Size(new Bitmap(filepath).Size.Width, new Bitmap(filepath).Size.Height);
76                     QRCodeDecoder qrDecoder = new QRCodeDecoder();
77                     string txtMsg = qrDecoder.decode(new QRCodeBitmapImage(new Bitmap(pictureBox1.Image)), Encoding.UTF8);
78                     this.textBox2.Text = txtMsg;
79                 }
80                 catch { tt = "识别失败"; }
81                 Invoke((EventHandler)delegate
82                 {
83                     button1.Text = "识别";
84                 });
85             }
86             System.Threading.Thread.CurrentThread.Abort();
87         }
88     }
89 }