public void loadcell()
    {
        ds = objserver.GetDateset("select '0','-Select-' Cell union select Id,Cell from Cell ");

        Slct_Cell_QC.DataSource = ds.Tables[0];

        Slct_Cell_QC.DataValueField = "Cell";
        Slct_Cell_QC.DataTextField  = "Cell";
        Slct_Cell_QC.DataBind();
    }
    protected void onselectedindexchanged_QC(object sender, EventArgs e)
    {
        string unit = ddl_unit_QC.Text.ToString();

        if (unit == "MBU")
        {
            //ds = objserver.GetDateset("select '-Select-' MBU,'-Select-' MBU union select distinct MBU,MBU from Machine_rpt_tble order by 1 asc");

            //Slct_machine_QC.DataSource = ds.Tables[0];

            //Slct_machine_QC.DataValueField = "MBU";
            //Slct_machine_QC.DataTextField = "MBU";
            //Slct_machine_QC.DataBind();

            ds = objserver.GetDateset("select '0','-Select-' Cell union select Id,Cell from Cell ");

            Slct_Cell_QC.DataSource = ds.Tables[0];

            Slct_Cell_QC.DataValueField = "Cell";
            Slct_Cell_QC.DataTextField  = "Cell";
            Slct_Cell_QC.DataBind();
        }
        else if (unit == "ABU")
        {
            //ds = objserver.GetDateset("select '-Select-' ABU,'-Select-' ABU union select distinct ABU,ABU from Machine_rpt_tble order by 1 asc");

            //Slct_machine_QC.DataSource = ds.Tables[0];

            //Slct_machine_QC.DataValueField = "ABU";
            //Slct_machine_QC.DataTextField = "ABU";
            //Slct_machine_QC.DataBind();
        }
        else if (unit == "ALL")
        {
            //ds = objserver.GetDateset("SELECT '-Select-' ALLRPT,'-Select-' ALLRPT union select distinct MBU,MBU  as ALLRPT FROM Machine_rpt_tble where MBU<>'' UNION ALL SELECT '-Select-' ALLRPT,'-Select-' ALLRPT  union select distinct ABU,ABU  as ALLRPT   FROM Machine_rpt_tble where ABU<>'' ");

            //Slct_machine_QC.DataSource = ds.Tables[0];

            //Slct_machine_QC.DataValueField = "ALLRPT";
            //Slct_machine_QC.DataTextField = "ALLRPT";
            //Slct_machine_QC.DataBind();
        }
    }