public void load_data_2_grid() { US_DUNG_CHUNG v_us = new US_DUNG_CHUNG(); DataSet v_ds = new DataSet(); v_ds.Tables.Add(new DataTable()); DateTime startDate = new DateTime(); DateTime endDate = new DateTime(); if (deStartDate.EditValue == null) { startDate = new DateTime(2000, 1, 1); } else { startDate = (DateTime)deStartDate.EditValue; } if (deEndDate.EditValue == null) { endDate = DateTime.Now; } else { endDate = (DateTime)deEndDate.EditValue; } var states = (from CheckedListBoxItem item in chbbOrderState.Properties.Items where item.CheckState == CheckState.Checked select item.Value.ToString()).ToArray(); string orderState = ""; foreach (string state in states) { orderState += state + ","; } orderState += "0"; v_us.FillAllOrder(v_ds, startDate, endDate, orderState); m_grc_ds_tat_ca_don_dat_hang.DataSource = v_ds.Tables[0]; }