C#利用zxing.net操作二维码和条形码

下载地址：http://zxingnet.codeplex.com/

zxing.net是.net平台下编解条形码和二维码的工具，使用非常方便。

首先下载二进制dll文件，引入工程；

代码：

C#代码

1. using System; 
2. using System.Collections.Generic; 
3. using System.ComponentModel; 
4. using System.Data; 
5. using System.Drawing; 
6. using System.Text; 
7. using System.Windows.Forms; 
8. using ZXing.QrCode; 
9. using ZXing; 
10. using ZXing.Common; 
11. using ZXing.Rendering; 
12.  
13. namespace zxingTest 
14. { 
15.     public partial class Form1 : Form 
16.     { 
17.         EncodingOptions options = null; 
18.         BarcodeWriter writer = null; 
19.  
20.         public Form1() 
21.         { 
22.             InitializeComponent(); 
23.             options = new QrCodeEncodingOptions 
24.             { 
25.                 DisableECI = true, 
26.                 CharacterSet = "UTF-8", 
27.                 Width = pictureBoxQr.Width, 
28. Height = pictureBoxQr.Height
29.             }; 
30.             writer = new BarcodeWriter(); 
31.             writer.Format = BarcodeFormat.QR_CODE; 
32.             writer.Options = options; 
33.         } 
34.  
35.         private void buttonQr_Click(object sender, EventArgs e) 
36.         { 
37.             if (textBoxText.Text == string.Empty) 
38.             { 
39.                 MessageBox.Show("输入内容不能为空！"); 
40.                 return; 
41.             } 
42.             Bitmap bitmap = writer.Write(textBoxText.Text); 
43.             pictureBoxQr.Image = bitmap; 
44.         } 
45.     } 
46. } 

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using ZXing.QrCode;using ZXing;using ZXing.Common;using ZXing.Rendering;namespace zxingTest{    public partial class Form1 : Form    {        EncodingOptions options = null;        BarcodeWriter writer = null;        public Form1()        {            InitializeComponent();            options = new QrCodeEncodingOptions            {                DisableECI = true,                CharacterSet = "UTF-8",                Width = pictureBoxQr.Width,                Height = pictureBoxQr.Height            };            writer = new BarcodeWriter();            writer.Format = BarcodeFormat.QR_CODE;            writer.Options = options;        }        private void buttonQr_Click(object sender, EventArgs e)        {            if (textBoxText.Text == string.Empty)            {                MessageBox.Show("输入内容不能为空！");                return;            }            Bitmap bitmap = writer.Write(textBoxText.Text);            pictureBoxQr.Image = bitmap;        }    }}

效果：

将字符编码时可以指定字符格式；默认为ISO-8859-1英文字符集，但一般移动设备常用UTF-8字符集编码，

可以通过QrCodeEncodingOptions设置编码方式。

如果要生成其他zxing支持的条形码，只要修改BarcodeWriter.Format就可以了。

C#代码

1. using System; 
2. using System.Collections.Generic; 
3. using System.ComponentModel; 
4. using System.Data; 
5. using System.Drawing; 
6. using System.Text; 
7. using System.Windows.Forms; 
8. using ZXing.QrCode; 
9. using ZXing; 
10. using ZXing.Common; 
11. using ZXing.Rendering; 
12.  
13. namespace zxingTest 
14. { 
15.     public partial class Form1 : Form 
16.     { 
17.         EncodingOptions options = null; 
18.         BarcodeWriter writer = null; 
19.  
20.         public Form1() 
21.         { 
22.             InitializeComponent(); 
23.             options = new EncodingOptions 
24.             { 
25.                 //DisableECI = true, 
26.                 //CharacterSet = "UTF-8", 
27.                 Width = pictureBoxQr.Width, 
28.                 Height = pictureBoxQr.Height 
29.             }; 
30.             writer = new BarcodeWriter(); 
31.             writer.Format = BarcodeFormat.ITF; 
32.             writer.Options = options; 
33.         } 
34.  
35.         private void buttonQr_Click(object sender, EventArgs e) 
36.         { 
37.             if (textBoxText.Text == string.Empty) 
38.             { 
39.                 MessageBox.Show("输入内容不能为空！"); 
40.                 return; 
41.             } 
42.             Bitmap bitmap = writer.Write(textBoxText.Text); 
43.             pictureBoxQr.Image = bitmap; 
44.         } 
45.     } 
46. } 

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using ZXing.QrCode;using ZXing;using ZXing.Common;using ZXing.Rendering;namespace zxingTest{    public partial class Form1 : Form    {        EncodingOptions options = null;        BarcodeWriter writer = null;        public Form1()        {            InitializeComponent();            options = new EncodingOptions            {                //DisableECI = true,                //CharacterSet = "UTF-8",                Width = pictureBoxQr.Width,                Height = pictureBoxQr.Height            };            writer = new BarcodeWriter();            writer.Format = BarcodeFormat.ITF;            writer.Options = options;        }        private void buttonQr_Click(object sender, EventArgs e)        {            if (textBoxText.Text == string.Empty)            {                MessageBox.Show("输入内容不能为空！");                return;            }            Bitmap bitmap = writer.Write(textBoxText.Text);            pictureBoxQr.Image = bitmap;        }    }}

效果：

输入字符串需要符合编码的格式，不然会报错。

解码方式：

C#代码

1. using System; 
2. using System.Collections.Generic; 
3. using System.ComponentModel; 
4. using System.Data; 
5. using System.Drawing; 
6. using System.Text; 
7. using System.Windows.Forms; 
8. using ZXing.QrCode; 
9. using ZXing; 
10. using ZXing.Common; 
11. using ZXing.Rendering; 
12.    
13. namespace zxingTest 
14. { 
15.     public partial class Form1 : Form 
16.     { 
17.         BarcodeReader reader = null; 
18.    
19.         public Form1() 
20.         { 
21.             InitializeComponent(); 
22.             reader = new BarcodeReader(); 
23.         } 
24.    
25.         private void Form1_DragEnter(object sender, DragEventArgs e)//当拖放进入窗体 
26.         { 
27.             if (e.Data.GetDataPresent(DataFormats.FileDrop)) 
28.                 e.Effect = DragDropEffects.Copy;    //显示拷贝效应 
29.             else 
30.                 e.Effect = DragDropEffects.None;   
31.         } 
32.    
33.         private void Form1_DragDrop(object sender, DragEventArgs e)//当拖放放在窗体上 
34.         { 
35.             string[] fileNames = (string[])e.Data.GetData(DataFormats.FileDrop,false); //获取文件名 
36.             if (fileNames.Length > 0) 
37.             { 
38.                 pictureBoxPic.Load(fileNames[0]);   //显示图片 
39.                 Result result = reader.Decode((Bitmap)pictureBoxPic.Image);//通过reader解码 
40.                 textBoxText.Text = result.Text; //显示解析结果 
41.             } 
42.         } 
43.     } 
44. } 

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using ZXing.QrCode;using ZXing;using ZXing.Common;using ZXing.Rendering;  namespace zxingTest{    public partial class Form1 : Form    {        BarcodeReader reader = null;          public Form1()        {            InitializeComponent();            reader = new BarcodeReader();        }          private void Form1_DragEnter(object sender, DragEventArgs e)//当拖放进入窗体        {            if (e.Data.GetDataPresent(DataFormats.FileDrop))                e.Effect = DragDropEffects.Copy;    //显示拷贝效应            else                e.Effect = DragDropEffects.None;          }          private void Form1_DragDrop(object sender, DragEventArgs e) //当拖放放在窗体上        {            string[] fileNames = (string[])e.Data.GetData(DataFormats.FileDrop, false); //获取文件名            if (fileNames.Length > 0)            {                pictureBoxPic.Load(fileNames[0]);   //显示图片                Result result = reader.Decode((Bitmap)pictureBoxPic.Image); //通过reader解码                textBoxText.Text = result.Text; //显示解析结果            }        }    }}

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