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


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


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


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

}

}

}

}