public void PopulateProject() { RepositoryItemLookUpEdit Proj = cboProject.Edit as RepositoryItemLookUpEdit; try { DataTable dt = new DataTable(); dt = UnitDirBL.GetCostCentre(); Proj.DataSource = CommFun.AddNoneToDataTable(dt); Proj.PopulateColumns(); Proj.ValueMember = "CostCentreId"; Proj.DisplayMember = "CostCentreName"; Proj.Columns["CostCentreId"].Visible = false; Proj.ShowFooter = false; Proj.ShowHeader = false; } catch (Exception ex) { MessageBox.Show(ex.Message); } }