asp.net C#生成和解析二维码代码

作者：袖梨 2022-06-25

类库文件我们在文件最后面下载

【ThoughtWorks.QRCode.dll 就是类库】

使用时需要增加:

using ThoughtWorks.QRCode.Codec;
using ThoughtWorks.QRCode.Codec.Data;
using ThoughtWorks.QRCode.Codec.Util;

主要源代码：

1.生成二维码

代码如下

复制代码

QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
String encoding = cboEncoding.Text;
if (encoding == "Byte")
{
     qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
}
else if (encoding == "AlphaNumeric")
{
     qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.ALPHA_NUMERIC;
}
else if (encoding == "Numeric")
{
     qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.NUMERIC;
}
try
{
     int scale = Convert.ToInt16(txtSize.Text);
     qrCodeEncoder.QRCodeScale = scale;
}
catch (Exception ex)
{
     MessageBox.Show("Invalid size!");
     return;
}
try
{
     int version = Convert.ToInt16(cboVersion.Text);
     qrCodeEncoder.QRCodeVersion = version;
}
catch (Exception ex)
{
     MessageBox.Show("Invalid version !");
}

string errorCorrect = cboCorrectionLevel.Text;
if (errorCorrect == "L")
     qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.L;
else if (errorCorrect == "M")
     qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
else if (errorCorrect == "Q")
     qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.Q;
else if (errorCorrect == "H")
     qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.H;
Image image;
String data = txtEncodeData.Text;
image = qrCodeEncoder.Encode(data);
pb_view.Image = image;

2.解析二维码

代码如下	复制代码
QRCodeDecoder decoder = new QRCodeDecoder(); String decodedString = decoder.decode(new QRCodeBitmapImage(new Bitmap(pb_view.Image))); txtEncodeData.Text = decodedString;

Winform(Demo)下载：QRCode.rar http://file.111com.net/download/2013/06/29/201205161653178428.rar

Web(Demo)下载：webQRCode.rar http://file.111com.net/download/2013/06/29/201205161654200565.rar