Download Folder From Azure Blob Storage C# ^hot^ Page

: Use Directory.CreateDirectory() for each sub-path to recreate the Azure "folder" structure locally.

If you need more control—such as filtering specific file types or maintaining custom retry logic—you can manually list blobs with a prefix and download them individually.

The latest versions of the Azure SDK for .NET include built-in support for downloading entire virtual directories directly to a local path. download folder from azure blob storage c#

: Use GetBlobsAsync(prefix: "folder-name/") to find all files in the virtual directory.

Azure Storage Blobs client library for .NET - Microsoft Learn : Use Directory

: Use Task.WhenAll to download multiple blobs at once for better performance.

public async Task DownloadFolderManually(string connectionString, string containerName, string folderPrefix, string localBaseDir) { var containerClient = new BlobContainerClient(connectionString, containerName); var downloadTasks = new List (); await foreach (var blobItem in containerClient.GetBlobsAsync(prefix: folderPrefix)) { string localFilePath = Path.Combine(localBaseDir, blobItem.Name); string? directory = Path.GetDirectoryName(localFilePath); if (directory != null) Directory.CreateDirectory(directory); var blobClient = containerClient.GetBlobClient(blobItem.Name); downloadTasks.Add(blobClient.DownloadToAsync(localFilePath)); } await Task.WhenAll(downloadTasks); } Use code with caution. Best Practices for Large Folders directory = Path

To download a folder (or "virtual directory") from Azure Blob Storage using C#, the most efficient method is using the DownloadToDirectoryAsync method provided by the library.