Load document from Azure Blob Storage

Following code snippet shows how to convert a document from Azure Blob Storage:

public static void Run()
{
    string blobName = "sample.docx";
    string outputFile = Path.Combine("c:\output", "converted.pdf");
    using (Converter converter = new Converter(() => DownloadFile(blobName)))
    {
        PdfConvertOptions options = new PdfConvertOptions();
        converter.Convert(outputFile, options);
    }
}
        
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;
}

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