private void purchaseEquipmentToolStripMenuItem_Click(object sender, EventArgs e)
        {
            ViewPurchasesEquipmentForm o = new ViewPurchasesEquipmentForm();

            o.Show();
            Visible = false;
        }
        private void purchaseEquipmentToolStripMenuItem_Click(object sender, EventArgs e)
        {
            ViewPurchasesEquipmentForm o = new ViewPurchasesEquipmentForm();

            o.Show();
            this.Hide();
        }