how to get list of files or filenames in azure blob storage
CloudStorageAccount stgAccount = CloudStorageAccount.Parse(YOUR_CON_STRING);
var blobClient = stgAccount.CreateCloudBlobClient();
var stgContainer = blobClient.GetContainerReference("CONTAINER");
var blobs = stgContainer.ListBlobs().OfType().ToList();
foreach (var blob in blobs)
{
string bName = blob.Name;
long bSize = blob.Properties.Length;
string bModifiedOn = blob.Properties.LastModified.ToString();
}