private void sTOCKToolStripMenuItem_Click(object sender, EventArgs e)
        {
            foreach (Form f in this.MdiChildren)
            {
                if (f.GetType() == typeof(VIEW_STOCK))
                {
                    f.Activate();
                    return;
                }
            }
            Form ITEMS = new VIEW_STOCK();

            ITEMS.MdiParent = this;
            ITEMS.Show();
        }
        private void button2_Click_1(object sender, EventArgs e)
        {
            foreach (Form f in this.MdiChildren)
            {
                if (f.GetType() == typeof(VIEW_STOCK))
                {
                    f.Activate();
                    return;
                }
            }
            Form room = new VIEW_STOCK();

            room.MdiParent = this;
            room.Show();
        }