public static void SaveCashData()
{
Cash a = new Cash(ID, SelectedSur);
MyBDEntities context = new MyBDEntities();
context.Cash.Add(a);
context.SaveChangesAsync();
}
public static void SaveCardData()
{
Card a = new Card(ID, NumOfCard, Holder, SelectedMonth, SelectedYear, CVV);
MyBDEntities context = new MyBDEntities();
context.Card.Add(a);
context.SaveChangesAsync();
}