private void salesProcessingToolStripMenuItem_Click(object sender, EventArgs e)
        {
            NewOutgoingWindow dialog = new NewOutgoingWindow();

            dialog.ShowDialog();
            display();
        }
        private void button2_Click(object sender, EventArgs e)
        {
            NewOutgoingWindow dialog = new NewOutgoingWindow();

            dialog.ShowDialog();
            display();
        }