public void AddContactToGroup(Contact contact, ContactGroup group)
{
if (NSMessageHandler.MSNTicket == MSNTicket.Empty || AddressBook == null)
{
OnServiceOperationFailed(this, new ServiceOperationFailedEventArgs("ABGroupContactAdd", new MSNPSharpException("You don't have access right on this action anymore.")));
return;
}
if (contact.Guid == Guid.Empty)
throw new InvalidOperationException("This is not a valid Messenger contact.");
ABGroupContactAddAsync(contact, group,
delegate(object service, ABGroupContactAddCompletedEventArgs e)
{
if (e.Error == null)
{
contact.AddContactToGroup(group);
}
});
}
