private void frm_Sales_FormClosing(object sender, FormClosingEventArgs e)
        {
            ButtonsStates btnStat = new ButtonsStates();

            btnStat.CloseToolStrip((frm_Main)this.MdiParent);
        }
 private void frm_Sales_Load(object sender, EventArgs e)
 {
     lastButtonStates = new ButtonsStates();
 }