private void Reset_Click(object sender, EventArgs e)
        {
            if (MainService.ConfirmReset())
            {
                foreach (var portfolio in PortfolioService.GetPortfolios())
                {
                    savePortfolioMenu.DropDownItems.RemoveByKey(portfolio.Name);
                    loadPortfolioMenu.DropDownItems.RemoveByKey(portfolio.Name);
                }

                MainService.Reset();
            }
        }