Remove blob inside virtual directory

I am trying to delete a blob inside a virtual directory, with no luck. The 404 error is always returned.

The url file looks something like this: https://XXX.blob.core.windows.net/YY/pdf/pdf/file.pdf where XXX is my account and YY is the container.

I tried to remove trhough it full name (pdf / pdf / file.pdf, no luck.

blockBlob = container.GetBlockBlobReference("pdf/pdf/file.pdf"); //or
blockBlob = container.GetBlockBlobReference("file.pdf");

      

        
        
        
      

    

Also tried navigating virtual folders (GetDirectoryReference) and deleting files when I get to it with no luck either.

CloudStorageAccount storageAccount = CloudStorageAccount.Parse(CloudConfigurationManager.GetSetting("StorageConnectionString"));
CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
CloudBlobContainer container = blobClient.GetContainerReference("YY");

CloudBlockBlob blockBlob;

string sBlob = fullUrl.Substring(fullUrl.IndexOf("YY/") + ("YY/").Length);

string[] sDirs = sBlob.Split(new Char[] { '/' });

if (sDirs.Length > 0)
{
     CloudBlobDirectory dir = container.GetDirectoryReference(sDirs[0]);
     if (sDirs.Length > 2) 
     { 
          for (int i = 1; i < sDirs.Length - 2; i++)
          {
               dir = dir.GetDirectoryReference(sDirs[i]);
          }
     }
     blockBlob = dir.GetBlockBlobReference(sDirs[sDirs.Length - 1]);
}
else
{
     blockBlob = container.GetBlockBlobReference(sBlob);
}

blockBlob.Delete(); //when debugging, I can see blockBlob properties here

      

        
        
        
      

    

Note. I can successfully delete files in the root directory ( https://XXX.blob.core.windows.net/YY/file.pdf ).

Mistake:

blockBlob.Delete()' threw an exception of type 'Microsoft.WindowsAzure.Storage.StorageException'
    base: {"The remote server returned an error: (404) Not found."}
    RequestInformation: {Microsoft.WindowsAzure.Storage.RequestResult}

      

        
        
        
      

    

UPDATE:

I was able to remove this code:

foreach (var blobItem in container.ListBlobs(useFlatBlobListing: true)) {
   if (blobItem.Uri.ToString() == caminho) {
      blockBlob.Delete();
      return "";
   }
}

      

        
        
        
      

    

... but that seems like a crazy solution ...: /