private void FillMappList() { objServicedb = new ServiceDB(); char cMapped = 'T'; Hashtable ht = new Hashtable(); DataSet ds = new DataSet(); lbMapp.DataSource = null; try { if (chkMapp.CheckState == CheckState.Unchecked) { cMapped = 'F'; lblMap.Text = "Unmapped Source"; } else { lblMap.Text = "Mapped Source"; } DataTable dt = objServicedb.GetMapOrUnmappedEcodes(CommonData.CompanyCode, CommonData.BranchCode, CommonData.DocMonth, cMapped).Tables[0]; if (dt.Rows.Count > 1) { lbMapp.DisplayMember = "ENAME"; lbMapp.ValueMember = "ECODE"; lbMapp.DataSource = dt; } dt = null; } catch (Exception ex) { MessageBox.Show(ex.Message); } finally { objServicedb = null; } }