c#生成二维码

        String link ="www.baidu.com";//这里一般是一个链接

封装后的方法,直接调用就可以了

 public void CreateQRCode(string content)

    {

        

        var qrCodeEncoder = new QRCodeEncoder

        {

            QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE,

            QRCodeScale = 6,

            QRCodeVersion = 4,

            QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M

        };

        System.Drawing.Image QRCodeImg = qrCodeEncoder.Encode(content);

        MemoryStream stream = new MemoryStream();

        QRCodeImg.Save(stream, System.Drawing.Imaging.ImageFormat.Png);

        Response.ClearContent();

        Response.ContentType = "image/Png";

        Response.BinaryWrite(stream.ToArray());

    }