Load document from Azure Blob Storage

 		string blobName = "sample.docx";

        using (Viewer viewer = new Viewer(() => DownloadFile(blobName)))
        {
            HtmlViewOptions viewOptions = HtmlViewOptions.ForEmbeddedResources();                

            viewer.View(viewOptions);
        }

		public static Stream DownloadFile(string blobName)
        {
            CloudBlobContainer container = GetContainer();
            CloudBlob blob = container.GetBlobReference(blobName);
            MemoryStream memoryStream = new MemoryStream();
            blob.DownloadToStream(memoryStream);
            memoryStream.Position = 0;
            return memoryStream;
        }

        private static CloudBlobContainer GetContainer()
        {
            string accountName = "***";
            string accountKey = "***";
            string endpoint = $"https://{accountName}.blob.core.windows.net/";
            string containerName = "***";
            StorageCredentials storageCredentials = new StorageCredentials(accountName, accountKey);
            CloudStorageAccount cloudStorageAccount = new CloudStorageAccount(
                storageCredentials, new Uri(endpoint), null, null, null);
            CloudBlobClient cloudBlobClient = cloudStorageAccount.CreateCloudBlobClient();
            CloudBlobContainer container = cloudBlobClient.GetContainerReference(containerName);
            container.CreateIfNotExists();
            return container;
        }