二维码生成Demo

在C#中直接引用ThoughtWorks.QRCode.dll 类,

下载 dll 类

http://file.111cn.net/download/2013/06/29/201205161654200565.rar

   protected void Button1_Click(object sender, EventArgs e)

    {

        QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();

        qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.ALPHA_NUMERIC;//编码方式(ALPHA_NUMERIC:字母和数字,BYTE:为字节,多用于汉字,NUMERIC:数字)

        qrCodeEncoder.QRCodeScale = 4;//大小(值越大生成的二维码图片像素越高)

        qrCodeEncoder.QRCodeVersion = 7; //版本(注意:设置为0主要是防止编码的字符串太长时发生错误,7)

        qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;//错误效验、错误更正(有4个等级)

        string data = "NI ";//这里是分销商路径

        String ls_fileName = "P"+DateTime.Now.ToString("yyyyMMddhhmmss") +".png";

        String ls_savePath = Server.MapPath(".") + "/QRCodeImages/" + ls_fileName;//

        //System.Text.Encoding.GetEncoding("GB2312")//如果内容是中文需要编码(utf-8,GB2312)

        qrCodeEncoder.Encode(data, System.Text.Encoding.GetEncoding("utf-8")).Save(ls_savePath);



        Image1.ImageUrl=("QRCodeImages/" + ls_fileName);

    }

 

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