private void GuestCheckAsync()
{
Guest.GuestName = GuestName;
if (!String.IsNullOrEmpty(Guest.GuestName))
{
int residentId = (from res in residents where res.Username == (string)Application.Current.Properties["Username"] select res.ResidentID).First();
Guest.CheckedIn = true;
checkinTime = DateTime.Now.ToString("dd MMMM yyyy HH:mm");
OnPropertyChanged("CheckinTime");
Guest.CheckinTime = checkinTime;
Guest.ResID = residentId;
database.postNewGuestAsync(Guest);
}
}