/// 下载时进行二维码识别
public void DownloadWithQrcodeRecognition()
{
string bucket = "examplebucket-1250000000"; //存储桶，格式：BucketName-APPID
string key = "exampleobject"; //对象键
//.cssg-snippet-body-start:[download-with-qrcode-recognition]
//二维码覆盖功能，将对识别出的二维码覆盖上马赛克。取值为0或1。0表示不开启二维码覆盖，1表示开启二维码覆盖，默认值0
QRCodeRecognitionRequest request = new QRCodeRecognitionRequest(bucket, key, 0);
QRCodeRecognitionResult result = cosXml.QRCodeRecognition(request);
//.cssg-snippet-body-end
}