DEV GridLookUpEdit 下拉检索

 /// <summary>
        /// 过滤
        /// </summary>
        /// <param name="sender"></param>
        private void Filter(object sender)
        {
            DevExpress.XtraEditors.GridLookUpEdit edit = sender as DevExpress.XtraEditors.GridLookUpEdit;
            DevExpress.XtraGrid.Views.Grid.GridView gridView = edit.Properties.View as DevExpress.XtraGrid.Views.Grid.GridView;
            System.Reflection.FieldInfo fi = gridView.GetType().GetField("extraFilter", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);

            DevExpress.Data.Filtering.BinaryOperator op1 = null;
            DevExpress.Data.Filtering.BinaryOperator op2 = null;

            op1 = new DevExpress.Data.Filtering.BinaryOperator("检索列名1", "%" + edit.AutoSearchText.ToUpper() + "%", DevExpress.Data.Filtering.BinaryOperatorType.Like);
            op2 = new DevExpress.Data.Filtering.BinaryOperator("检索列名2", "%" + edit.AutoSearchText.ToUpper() + "%", DevExpress.Data.Filtering.BinaryOperatorType.Like);

            string filterCondition = new DevExpress.Data.Filtering.GroupOperator(DevExpress.Data.Filtering.GroupOperatorType.Or, new DevExpress.Data.Filtering.CriteriaOperator[] { op1, op2 }).ToString();
            fi.SetValue(gridView, filterCondition);

            gridView.ApplyColumnsFilter();
        }