private void refreshchecklistStk()
        {
            shoppingUserControls = new List <shoppingUserControl>();
            var buys = bl.getAndUpdateFromGoogleBuys();

            checklistStk.Children.Clear();

            if (buys != null)
            {
                foreach (var buy in buys)
                {
                    if (buy.isApproved == false)
                    {
                        shoppingUserControl shoppingUserControl = new shoppingUserControl(buy, bl, true, this);
                        checklistStk.Children.Add(shoppingUserControl);
                        shoppingUserControls.Add(shoppingUserControl);
                    }
                }
            }
        }
        private void refreshHistoryStk(DateTime date)
        {
            shoppingUserControls = new List <shoppingUserControl>();
            var buys = bl.getApprovedBuys();

            HistoryStk.Children.Clear();

            if (buys != null)
            {
                foreach (var buy in buys)
                {
                    if (buy.isApproved == true && buy.date == date)
                    {
                        shoppingUserControl shoppingUserControl = new shoppingUserControl(buy, bl, false, this);
                        HistoryStk.Children.Add(shoppingUserControl);
                        shoppingUserControls.Add(shoppingUserControl);
                    }
                }
            }
        }