//不显示下拉按钮和禁止下拉

         replaceLueStaff.Buttons.Clear();

         replaceLueStaff.ShowDropDown = DevExpress.XtraEditors.Controls.ShowDropDown.Never;

         replaceLueStaff.Click += new EventHandler(replaceLueStaff_Click);

        void replaceLueStaff_Click(object sender, EventArgs e)

        {

            //获取选中的ColumnEdit

            SearchLookUpEdit lue = sender as SearchLookUpEdit;

            //linq实现 not in 筛选

            //gvActor.DataSource为当前gridview,m_dtStaffAll为控件数据源

            var selectedIds = ((DataView)(gvActor.DataSource)).OfType<DataRowView>().Select(x => x["STAFF_ID"].ToString());

            var query = from p in m_dtStaffAll.AsEnumerable()

                        where !(from x in selectedIds select x).Contains(p["STAFF_ID"].ToString())

                        select p;

            lue.Properties.DataSource = query.AsDataView();

            lue.ShowPopup();

        }