// Menu Created When clicked Save Button
        private void BtnSave_Click(object sender, EventArgs e)
        {
            if ((cbxCustomer.SelectedIndex >= 0) || (cbxProduct.SelectedIndex >= 0) || (numQuantity.Value > 0))
            {
                if (ValidateOrder())
                {
                    MenuOrder menuOrder     = new MenuOrder();
                    string[]  custarr       = cbxCustomer.SelectedItem.ToString().Split('-');
                    string    selectedFname = custarr[1].Trim();
                    string    selectedLname = custarr[0].Trim();

                    selectedCustomer     = _context.Customers.FirstOrDefault(c => c.Firstname == selectedFname && c.Lastname == selectedLname);
                    menuOrder.Customer   = selectedCustomer;
                    menuOrder.CustomerId = selectedCustomer.Id;

                    string[] prodarr     = cbxProduct.SelectedItem.ToString().Split('|');
                    string   selectedPro = prodarr[0].Trim();
                    SelectedmenuItem     = _context.MenuItems.FirstOrDefault(m => m.Name == selectedPro);
                    menuOrder.MenuItem   = SelectedmenuItem;
                    menuOrder.MenuItemId = SelectedmenuItem.Id;

                    menuOrder.Quantity  = (int)numQuantity.Value;
                    menuOrder.Status    = true;
                    cbxCustomer.Enabled = false;
                    btnOrdered.Enabled  = true;
                    menuOrders.Add(menuOrder);
                    FillOrderList();
                }
            }
            else
            {
                MessageBox.Show("Please, fill all fields ");
            }
        }
 // Constructor ...
 public MenuOrderForm()
 {
     InitializeComponent();
     _context         = new GymDbContext();
     SelectedOrder    = new MenuOrder();
     menuOrders       = new List <MenuOrder>();
     selectedCustomer = new Customer();
     SelectedmenuItem = new MenuItem();
     uniMetods        = new UniMetods();
 }