Help getting Metadata keys / values

Hi All

Struggling a bit trying to work out how to view a vApps metadata entries.  At the moment just trying to get a list of key/values.  I've gotten as far as:

Vapp vapp = Vapp.GetVappByReference(client, vAppRef);


Metadata md = vapp.GetMetadata();


Dictionary<string, string> mdDict = md.GetMetadataEntries();

But apparently my dictionary is empty

I can obtain a list of the metadata keys by doing:

List<MetadataEntryType> mdList = md.GetTypedMetadataEntries();
foreach (MetadataEntryType mdEntry in mdList)
{    Response.Write(mdEntry.Key);
}

But thats all I can get.  No values - what am I doing wrong?

Thanks!

Mark