private void bindGrid(Object sender, CommandEventArgs e)
        {
            string dept = e.CommandArgument.ToString();

            if (dept == "100")
            {
                PTTB.Visible = true;
                PTT.Visible  = false;
                GC.Visible   = false;
                CS.Visible   = false;
                TCS.Visible  = false;
                PTTB.BindPPLDetail();
            }
            else if (dept == "200")
            {
                PTTB.Visible = false;
                PTT.Visible  = true;
                GC.Visible   = false;
                CS.Visible   = false;
                TCS.Visible  = false;
                PTT.BindPPLDetail();
            }
            else if (dept == "300")
            {
                PTTB.Visible = false;
                PTT.Visible  = false;
                GC.Visible   = true;
                CS.Visible   = false;
                TCS.Visible  = false;
                GC.BindPPLDetail();
            }
            else if (dept == "400")
            {
                PTTB.Visible = false;
                PTT.Visible  = false;
                GC.Visible   = false;
                CS.Visible   = true;
                TCS.Visible  = false;
                CS.BindPPLDetail();
            }
            else if (dept == "500")
            {
                PTTB.Visible = false;
                PTT.Visible  = false;
                GC.Visible   = false;
                CS.Visible   = false;
                TCS.Visible  = true;
                TCS.BindPPLDetail();
            }
            else if (dept == "600")
            {
                PTTB.Visible = false;
                PTT.Visible  = false;
                GC.Visible   = false;
                CS.Visible   = false;
                TCS.Visible  = false;
            }
        }