DownloadToStreamAsync returns empty stream C#

Question

I'm trying to download a blob file as a bytearray from my blob account on Azure. I do this.

 var blockBlob = blobContainer.GetBlockBlobReference(id);

                using (var mStream = new MemoryStream())
                {
                    blockBlob.DownloadToStreamAsync(mStream);
                    result = mStream.ToArray();
                }

The code above returns me a empty stream. I do have the file on my azure blob account and I checked the uri that is generated by code and it's the same that the one on my azure blob for the file I want to download as bytearray.

Is there a better way to download a azure blob file as bytearray in c#?

Answer 1

You should wait till the async operation gets completed.

          using (var mStream = new MemoryStream())
            {

                 await  blockBlob.DownloadToStreamAsync(mStream);
                 result = mStream.ToArray();
            }

You are getting empty because you try to get value from it when it is not yet available.