private void lbl_saleR_Click(object sender, EventArgs e)
        {
            pnl_rpots.Controls.Clear();
            Rpot_Sales rsale = new Rpot_Sales();

            rsale.TopLevel = false;
            rsale.Visible  = true;
            pnl_rpots.Controls.Add(rsale);
        }
        private void btn_reset_Click(object sender, EventArgs e)
        {
            Report_main.pn_Rpot.Controls.Clear();
            Rpot_Sales rsale = new Rpot_Sales();

            rsale.TopLevel = false;
            rsale.Visible  = true;
            Report_main.pn_Rpot.Controls.Add(rsale);
        }
        private void Report_main_Load(object sender, EventArgs e)
        {
            pn_Rpot = pnl_rpots;

            pnl_rpots.Controls.Clear();
            Rpot_Sales rsale = new Rpot_Sales();

            rsale.TopLevel = false;
            rsale.Visible  = true;
            pnl_rpots.Controls.Add(rsale);
        }
        private void salesReportToolStripMenuItem_Click(object sender, EventArgs e)
        {
            panelMain.Controls.Clear();
            Report_main View_rpt = new Report_main();

            View_rpt.TopLevel = false;
            View_rpt.Visible  = true;
            panelMain.Controls.Add(View_rpt);

            Report_main.pn_Rpot.Controls.Clear();
            Rpot_Sales rsale = new Rpot_Sales();

            rsale.TopLevel = false;
            rsale.Visible  = true;
            Report_main.pn_Rpot.Controls.Add(rsale);
        }