How to list subdirectories in Azure blob storage

If you would like to list all "subdirectories" in "Common\Service1" directory you can use something like this:

    var directory = blobContainer.GetDirectoryReference(@"Common/Service1");    var folders = directory.ListBlobs().Where(b => b as CloudBlobDirectory != null).ToList();    foreach (var folder in folders)    {        Console.WriteLine(folder.Uri);    }

Full code sample:

    var random = new Random();    CloudStorageAccount storageAccount = CloudStorageAccount.DevelopmentStorageAccount;    var cloudBlobClient = storageAccount.CreateCloudBlobClient();    CloudBlobContainer blobContainer = cloudBlobClient.GetContainerReference("test-container");    blobContainer.CreateIfNotExists();    string[] objects = new[]                           {                               @"Common\Service1\Type1\Object1", @"Common\Service1\Type1\Object2", @"Common\Service1\Type2\Object1",                               @"Common\Service1\Type2\Object2", @"Common\Service1\Type3\Object1", @"Common\Service1\Type3\Object2",                               @"Common\Service1\Type3\Object3"                           };    foreach (var newObject in objects)    {        var newBlob = blobContainer.GetBlockBlobReference(newObject);        var buffer = new byte[1024];        random.NextBytes(buffer);        newBlob.UploadFromByteArray(buffer,0,buffer.Length);    }    var directory = blobContainer.GetDirectoryReference(@"Common/Service1");    var folders = directory.ListBlobs().Where(b => b as CloudBlobDirectory != null).ToList();    foreach (var folder in folders)    {        Console.WriteLine(folder.Uri);    }

This will output Uri for Type1,Type2 and Type3 directory.

Building on b2zw2a's answer:

• The @ is only needed when using \, not /.
• Don't chain ToList() after ListBlobs(). ListBlobs() provides lazy loading and will give you better perf.
• Use OfType<CloudBlobDirectory>() to filter out only the type you want

Giving you:

var directory = blobContainer.GetDirectoryReference("Common/Service1");var folders = directory.ListBlobs().OfType<CloudBlobDirectory>();foreach (var folder in folders){    Console.WriteLine(folder.Uri);}

var nameList=logoContainer.ListBlobs().Where(b => b as CloudBlobDirectory != null).Select(x => x.Uri + "").ToList();

By using this you can get all the filenames in a single query.