GSync

OGSync.cs

public class ContactFetcher
    {
        public event EventHandler<ContactFetchEventArgs> ContactFetch = delegate { };
        public void BeginFetchAll(string user, string password)
        {
            ContactsService svc = new ContactsService("MyApp");
            
            svc.setUserCredentials(user, password);
            
            List<ContactEntry> contacts = new List<ContactEntry>();
            int i = 0;

            svc.AsyncOperationCompleted += (s, e) =>
                {
                    foreach (ContactEntry entry in (e.Feed as ContactsFeed).Entries)
                    {
                        ContactFetch(this, new ContactFetchEventArgs { Contact=entry, Current=++i,Of=e.Feed.TotalResults });
                    }
                    if (e.Feed.NextChunk != null)
                    {
                        svc.QueryFeedAync(new Uri(e.Feed.NextChunk), DateTime.MinValue, this);
                    }
                };
            svc.QueryFeedAync(new Uri(ContactsQuery.CreateContactsUri(user)), DateTime.MinValue, this);
        }

    }
    public class ContactFetchEventArgs:EventArgs
    {
        public ContactEntry Contact { get; set; }
        public int Current { get; set; }
        public int Of { get; set; }
    }