/// <summary>
/// Button：Create Order
/// </summary>
private void button3_Click(object sender, EventArgs e)
{
var execId = RestaurantViewModel.CreateBussinessObjectInstance();
GuestOrderEntity gOrder = new GuestOrderEntity(execId);
RestaurantViewModel.RestaurantEntity.GuestOrderList.Add(gOrder);
RestaurantViewModel.executorDict[execId].go();
OrderingForm of = new OrderingForm(true);
of.BindingGuestOrderId = gOrder.OrderId;
of.ShowDialog(this);
}
