Patiently create blob container; useful when container of same name was recently deleted (and full deletion may take a little time)

PatientlyCreateBlobContainer.cs

using Microsoft.WindowsAzure.StorageClient;

/// <summary>
/// Ensure that blobContainer exists before this method returns.
/// There is no timeout or maximum time for which this method can run.
/// </summary>
/// <param name="blobContainer">The (possibly not-yet-created) blob container.</param>
/// <param name="options">Required options for blob creation.</param>
/// <param name="retryDelay">Optional. Control how long to sleep between creation attempts.</param>
/// <returns>If success, just returns. Otherwise, exception is thrown.</returns>
public static void PatientlyCreateBlobContainer(
   CloudBlobContainer blobContainer
 , BlobRequestOptions options
 , TimeSpan retryDelay = TimeSpan.FromMilliseconds(200))
{
   bool itExists = false;

   while (!itExists)
   {
      try
      {
         // blobContainer has a default retry policy
         itExists = blobContainer.CreateIfNotExist(options); 
         return;
      }
      catch (StorageClientException ex)
      {
         if (ex.ErrorCode == StorageErrorCode.ResourceAlreadyExists
          && ex.StatusCode == System.Net.HttpStatusCode.Conflict)
            {
               // eat ex
               System.Threading.Thread.Sleep(retryDelay);
            }
            else
            {
               throw;
            }
         }
      }
      throw new Exception(String.Format("Could not create container {0}."
                                      , blobContainer.Name));
   }
}