private void BindData()
    {
        pager.PageSize = PagingSize;

        RouteDal routeDal = new RouteDal();
        string   filter   = null;

        if (ViewState["Filter"] != null)
        {
            filter = ViewState["Filter"].ToString();
        }
        pager.RecordCount = routeDal.GetCount(filter);
        DataTable table = routeDal.GetAll(pageIndex, PagingSize, filter);

        BindTable2GridView(gvMain, table);
    }