Zxing一维条码/二维条码生成与读取开发实例

一时失言乱红尘 2023-01-03 04:50 252阅读 0赞

Zxing是一个免费的条码处理软件，可生成一维码、二维码并进行读取。注释中有功能介绍

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1.下载Zxing的.Net类库，并引用zxing.dll,zxing.presentation.dll

using ZXing;
    using ZXing.Common;
    using ZXing.QrCode;

2.生成一维码,并保存图片

//定义变量
    private int cw=200;
    private int ch=200;
    //定义路径
    private string path=AppDomain.CurrentDomain.BaseDirectory+"\\"; 
    private void btnCreateCode_Click(object sender,EventArgs e)
    {
        //设置条码的规格
        EncodingOptions encoding=new EncodingOptions();
        encoding.Width=cw;
        encoding.Height=ch;
        //生成条码的图片并保存
        BarcodeWriter bw=new BarcodeWriter ();
        //指定规格
        bw.Options=encoding;
        bw.Format=BarcodeFormat.CODE_39;
        Bitmap btp=bw.Write(txtInfor.Text.Trim());
        //将图片转换为字符串数组
        MemoryStream ms=new MemoryStream();
        btp.Save(ms,ImageFormat.Bmp);
        ms.Seek(0,SeekOrigin.Begin);
        byte[] buffer=new byte[ms.Length];
        ms.Read(buffer,0,buffer.Length);
        ms.Dispose();
        using(FileStream fs=new FileStream(path+txtInfor.Text.Trim()+".bmp",FileMode.Create))
        {
            fs.Write(buffer,0,buffer.Length);
        }
    }

3.生成二维码并保存图片

private void btnCreateCode2_Click(object sender,EventArgs e)
    {
        //1.先设置二维码的规格
        QrCodeEncodingOptions qr=new QrCodeEncodingOptions ();
        //设置编码格式否则会出现乱码
        qr.CharacterSet="UTF-8";
        qr.Width=cw;
        qr.Height=ch;
        //设置二维码图片周围空白边距
        qr.Margin=1;
        //2.生成二维码图片并进行保存
        BarcodeWriter bw=new BarcodeWriter ();
        //设置为二维码
        bw.Format=BarcodeFormat.QR_CODE;
        //指定格式
        bw.Options=qr;
        Bitmap bitmap=bw.Write(txtInfor.Text.Trim());
        //设置图片路径
        string file=path+txtInfor.Text.Trim()+".bmp";
        MemoryStream ms=new MemoryStream();
        bitmap.Save(ms,ImageFormat.Bmp);
        ms.Seek(0,SeekOrigin.Begin);
        byte[] buffer=new byte[ms.Length];
        ms.Read(buffer,0,buffer.Length);
        ms.Dispose();
        //保存图片
        using(FileStream fs=new FileStream(file,FileMode.Create))
        {
            fs.Write(buffer,0,buffer.Length);
        }
    }

4.读取一维码

private void btnReadCode_Click(object sender,EventArgs e)
    {
        //1.设置读取条码的格式
        DecodingOptions decoding=new DecodingOptions ();
        //指定读取格式，这里的格式就是生成条码时设定的格式(两处一定要一致)
        decoding.PossibleFormats=new List<BarcodeFormat>(){BarcodeFormat.CODE_39};
        //2.进行读取操作
        BarcodeReader br=new BarcodeReader();
        //指定规格
        br.Options=decoding;
        Image img=null;
        using(FileStream fs=new FileStream(path+txtInfor.Text.Trim()+".bmp",FileMode.Open))
        {
            img=Image.FromStream(fs);
        }
        //读取条形码
        Result result=br.Decode(img as Bitmap);
    }

5.读取二维码

private void btnReadCode2_Click(object sender,EventArgs e)
    {
        //1.设置读取二维吗规格
        DecodingOptions dr=new DecodingOptions();
        dr.PossibleFormats=new List<BarcodeFormat>()
                            {
                                //设置为二维码
                                BarcodeFormat.QR_CODE    
                            }; 
        //2.进行读取操作
        BarcodeReader br=new BarcodeReader();
        //指定规格
        br.Options=dr;
        Image img=null;
        using(FileStream fs =new FileStream(path+txtInfor.Text.Trim()+".bmp",FileMode.Open))
        {
            img=Image.FromStream(fs);
        }
        Result rs=br.Decode(img as Bitmap);
    }

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