private void SearchSectors()
        {
            Sector sectorObj = new Sector();

            if (Request.QueryString["F"] != null && uiRadDatePickerFrom.SelectedDate == null)
            {
                uiRadDatePickerFrom.SelectedDate = DateTime.ParseExact(Request.QueryString["F"].ToString(), "dd/MM/yyyy", null);
            }

            if (uiRadDatePickerFrom.SelectedDate == null)
            {
                uiRadDatePickerFrom.SelectedDate = GetWeekStartDaTe();
            }

            if (Request.QueryString["T"] != null && uiRadDatePickerTo.SelectedDate == null)
            {
                uiRadDatePickerTo.SelectedDate = DateTime.ParseExact(Request.QueryString["T"].ToString(), "dd/MM/yyyy", null);
            }

            if (uiRadDatePickerTo.SelectedDate == null)
            {
                uiRadDatePickerTo.SelectedDate = GetWeekStartDaTe().AddDays(7);
            }

            sectorObj.SearchSectors(uiTextBoxSearch.Text, (uiRadDatePickerFrom.SelectedDate != null) ? uiRadDatePickerFrom.SelectedDate.Value : DateTime.ParseExact("01/" + DateTime.Now.Month.ToString("00") + "/" + DateTime.Now.Year.ToString(), "dd/MM/yyyy", null)
                , (uiRadDatePickerTo.SelectedDate != null) ? uiRadDatePickerTo.SelectedDate.Value : DateTime.ParseExact(((DateTime.Now.Month != 2) ? "30" : "28") + "/" + DateTime.Now.Month.ToString("00") + "/" + DateTime.Now.Year.ToString(), "dd/MM/yyyy", null));
            sectorObj.Sort = "SectorDate Desc";

            if (uiRadDatePickerFrom.SelectedDate == null)
            {
                uiRadDatePickerFrom.SelectedDate = DateTime.ParseExact("01/" + DateTime.Now.Month.ToString("00") + "/" + DateTime.Now.Year.ToString(), "dd/MM/yyyy", null);
            }
            if (uiRadDatePickerTo.SelectedDate == null)
            {
                uiRadDatePickerTo.SelectedDate = DateTime.ParseExact(((DateTime.Now.Month != 2) ? "30" : "28") + "/" + DateTime.Now.Month.ToString("00") + "/" + DateTime.Now.Year.ToString(), "dd/MM/yyyy", null);
            }

            uiRadGridFlights.DataSource = sectorObj.DefaultView;
            uiRadGridFlights.DataBind();
        }