Load document from Azure Blob Storage

Following example demonstrates how to render document from Azure Blob Storage.

string blobName = "sample.docx";
Stream stream = DownloadFile(blobName);

using (Viewer viewer = new Viewer())
    HtmlViewOptions viewOptions = HtmlViewOptions.ForEmbeddedResources();


public static Stream DownloadFile(string blobName)
    BlobContainerClient containerClient = GetContainerClient();

    // Get a reference to a blob
    BlobClient blobClient = containerClient.GetBlobClient(blobName);

    MemoryStream memoryStream = new MemoryStream();
    memoryStream.Position = 0;
    return memoryStream;

private static BlobContainerClient GetContainerClient()
    string accountName = "***";
    string accountKey = "***";
    string endpointSuffix = "core.windows.net";
    string containerName = "***";

    string connectionString = $"DefaultEndpointsProtocol=https;AccountName={accountName};AccountKey={accountKey};EndpointSuffix={endpointSuffix}";

    // Create a BlobContainerClient object which will be used to create a container client
    BlobContainerClient blobContainerClient = new BlobContainerClient(connectionString, containerName);

    return blobContainerClient;

More resources

GitHub Examples

You may easily run the code above and see the feature in action in our GitHub examples:

Free Online App

Along with full-featured .NET library we provide simple but powerful free Apps. You are welcome to view Word, PDF, Excel, PowerPoint documents with free to use online GroupDocs Viewer App.