public async Task <IActionResult> GetBlob(string blobname)
        {
            Blobinfo b    = new Blobinfo();
            var      data = await _blobService.GetBlobAync(blobname);

            b.Content     = data.Content;
            b.ContentType = data.ContentType;
            return(File(b.Content, b.ContentType));
        }
        //private readonly BlobServiceClient _blobServiceClient;

        //public BlobService(BlobServiceClient blobServiceClient)
        //{
        //    _blobServiceClient = blobServiceClient;
        //}
        public async Task <Blobinfo> GetBlobAync(string name)
        {
            //var containerclient = _blobServiceClient.GetBlobContainerClient("userdocs");
            //var blobclient = containerclient.GetBlobClient(name);
            //Response<BlobDownloadInfo> download = await blobclient.DownloadAsync();
            Blobinfo binfo = new Blobinfo();

            //binfo.Content = download.Value.Content;
            //binfo.ContentType = download.Value.ContentType;
            return(binfo);
        }