How to List the containers in azure blob storage? - azure

Question

I am developing a social network application.
I want to creat ,in azure storage, a container for each user (client) joining a social network, which means user1 has a container named container 1, and inside container 1 there will be user 1 profile in xml format and a profile picture of user 1.
Similarly, for user2 there will be container 2 created in azure blob storage and then user 2 profile is saved in xml format and profile picture of user 2, and it goes like this so for, let say, 10 users there will be 10 containers.
If i want to list all 9 users' information stored in Azure storage in different 9 containers from user client 1, how could i do that?
I am using webservice, but the challenge I am facing is how to collect all the 9 user profile information located in 9 different containers.

Answer 1

The following should do the trick -
CloudStorageAccount account =
CloudStorageAccount.FromConfigurationSetting("DataConnectionString");
// We need to access blobs now, so create a CloudBlobClient
CloudBlobClient blobClient = account.CreateCloudBlobClient();
IEnumerable<CloudBlobContainer> containers = blobClient.ListContainers();

Answer 2

For newer versions of Microsoft.WindowsAzure.Storage, use the right variant of CloudBlobClient.ListContainersSegmentedAsync method. Example usage is as follows:
private static async Task<IEnumerable<CloudBlobContainer>> ListContainersAsync(CloudBlobClient cloudBlobClient)
{
BlobContinuationToken continuationToken = null;
var containers = new List<CloudBlobContainer>();
do
{
ContainerResultSegment response = await cloudBlobClient.ListContainersSegmentedAsync(continuationToken);
continuationToken = response.ContinuationToken;
containers.AddRange(response.Results);
} while (continuationToken != null);
return containers;
}
Usage of the above method will be as follows:
string connectionString = "<your connection string>";
CloudStorageAccount.TryParse(connectionString, out CloudStorageAccount storageAccount);
if (storageAccount == null)
{
Console.WriteLine("Connection string did not work");
}
CloudBlobClient cloudBlobClient = storageAccount.CreateCloudBlobClient();
var containers = await ListContainersAsync(cloudBlobClient);
Alternately, you can create an extension method as follows:
public static class CloudBlobClientExtension
{
public static async Task<IEnumerable<CloudBlobContainer>> ListContainersAsync(this CloudBlobClient cloudBlobClient)
{
BlobContinuationToken continuationToken = null;
var containers = new List<CloudBlobContainer>();
do
{
ContainerResultSegment response = await cloudBlobClient.ListContainersSegmentedAsync(continuationToken);
continuationToken = response.ContinuationToken;
containers.AddRange(response.Results);
} while (continuationToken != null);
return containers;
}
}
Usage of the above extension method will be as follows:
string connectionString = "<your connection string>";
CloudStorageAccount.TryParse(connectionString, out CloudStorageAccount storageAccount);
if (storageAccount == null)
{
Console.WriteLine("Connection string did not work");
}
CloudBlobClient cloudBlobClient = storageAccount.CreateCloudBlobClient();
IEnumerable<CloudBlobContainer> containers = await cloudBlobClient.ListContainersAsync();
For more details, please refer to MSDN and Balkan's Blog
For older Azure Storage versions, use CloudBlobClient.ListContainers method. Example usage is as follows:
string connectionString = "<your connection string>";
CloudStorageAccount.TryParse(connectionString, out CloudStorageAccount storageAccount);
if (storageAccount == null)
{
Console.WriteLine("Connection string did not work");
}
CloudBlobClient cloudBlobClient = storageAccount.CreateCloudBlobClient();
var containers = cloudBlobClient.ListContainers();

Answer 3

Azure Blob Storage client library v12 for .NET
using Azure;
using Azure.Storage.Blobs;
BlobServiceClient blobServiceClient = new BlobServiceClient(azStorageConnString);
var containerList = blobServiceClient.GetBlobContainers();
foreach (var container in containerList)
// doImportantWork

Answer 4

CloudStorageAccount account =
CloudStorageAccount.FromConfigurationSetting("DataConnectionString");
// We need to access blobs now, so create a CloudBlobClient
var blobClient = account.CreateCloudBlobClient();
IEnumerable<CloudBlobContainer> containers = blobClient.ListContainers();
// This will return you list of containers
var containerList = containers.Select(e => e.Name).Tolist();