ช่วยอธิบายโค้ดนี้หน่อยนะคะ ว่าทำงานยังไงกำลังฝึกเขียนจะเอามาแก้แต่ไม่เข้าใจค่ะ

 protected void cbpCalculateTime_Callback(object sender, DevExpress.Web.ASPxClasses.CallbackEventArgsBase e)
    {
    String[] param=    e.Parameter.Split(new char[] { '/' });
        String[] place = new String[]{"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P"};
        String[] temp = param[0].Split(new char[] { ',' });

        List<TourPlanLib.PlaceVO> places1 = (List<TourPlanLib.PlaceVO>)Session["plan_place"];
        List<TourPlanLib.PlaceVO> placesSorted = new List<TourPlanLib.PlaceVO>();
        String[] latLOns = param[1].Split(new char[] { ',' });
        for (int ii = 0; ii < latLOns.Length; ii++)
        {
            if (latLOns[ii].Length == 0) continue;
            String[] lat_Lon = latLOns[ii].Split(new char[] { '-' });
            for (int j = 0;j < places1.Count; j++)
            {
                if (lat_Lon[0].Equals(places1[j].Place.Lat.ToString()) && lat_Lon[1].Equals(places1[j].Place.Lon.ToString()))
                {
                    placesSorted.Add(places1[j]);
                    break;
                }
            }
        }