public static string[] GetOpeartorByMobileSeries(string prefixText)
    {
        try
        {
            DataSet ds = new DataSet();
            clsMasters _objmasters = new clsMasters();
            ds = _objmasters.GetOpeartorByMobileSeries(prefixText);

            List<string> Operator = new List<string>();
            for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
            {
                Operator.Add(ds.Tables[0].Rows[i]["MobileOperator"].ToString());
                System.Web.HttpContext.Current.Session["MobileOperator"] = ds.Tables[0].Rows[i]["MobileOperator"].ToString();
            }

            return Operator.ToArray();

            //FlightBAL objFlightBal = new FlightBAL();
            //ds = objFlightBal.GetAirportCodes();

            //string filteringquery = "CityName LIKE'" + prefixText + "%'";
            ////Select always return array,thats why we store it into array of Datarow
            //DataRow[] dr = ds.Tables[0].Select(filteringquery);
            ////create new table
            //DataTable dtNew = new DataTable();
            ////create a clone of datatable dt and store it into new datatable
            //dtNew = ds.Tables[0].Clone();
            ////fetching all filtered rows add add into new datatable
            //foreach (DataRow drNew in dr)
            //{
            //    dtNew.ImportRow(drNew);
            //}
            ////return dtAirportCodes;

            //List<string> airports = new List<string>();
            //for (int i = 0; i < dtNew.Rows.Count; i++)
            //{
            //    airports.Add(dtNew.Rows[i]["CityName"].ToString().Trim() + "," + dtNew.Rows[i]["AirportDesc"].ToString().Trim() + " - (" + dtNew.Rows[i]["AirportCode"].ToString().Trim() + ")");
            //}
            //return airports.ToArray();
        }
        catch (Exception)
        {
            throw;

        }
    }