private void addInvestmentToolStripMenuItem_Click(object sender, System.EventArgs e)
        {
            Add_Investment addStock = new Add_Investment(ref thisPortfolio);

            addStock.ShowDialog();

            thisPortfolio = addStock.ThisPortfolio;

            updateGrid(thisPortfolio);
        }
        private void addStockToolStripMenuItem_Click(object sender, System.EventArgs e)
        {
            Add_Investment addStock = new Add_Investment(ref thisPortfolio, qr1);

            addStock.ShowDialog();
        }
        private void bAddToPortfolio_Click(object sender, EventArgs e)
        {
            Add_Investment addStock = new Add_Investment(ref thisPortfolio, queryResult);

            addStock.Show();
        }