private void ThumbnailOssPutObject(string bucketName, string imageName, byte[] images, OssClient ossClient) { string graphFileName = string.Format("graph_{0}", imageName); byte[] listGraphSizeByte = ThumbnailHelper.MakeThumbnail(ThumbnailHelper.ReturnPhoto(images), "", 200, 200, "Cut"); var objStream = new MemoryStream(listGraphSizeByte); ossClient.PutObject(config.Bucket, graphFileName, objStream); objStream.Close(); }