gridview上navigatr添加按钮事件，手动添加的行，取消自动添加行

 private void grcPPintervalDetail_EmbeddedNavigator_ButtonClick(object sender, DevExpress.XtraEditors.NavigatorButtonClickEventArgs e)
        {
            if (e.Button.ButtonType == DevExpress.XtraEditors.NavigatorButtonType.Append)
            {
                try
                {
                    ApplyEdit();
                    if (!string.IsNullOrEmpty(glucInvCName.EditValue.ToString()))
                    {
                        e.Handled = true;//取消默认新增事件
                        　 grvPPintervalDetail.AddNewRow();
                        int lineNum = grvPPintervalDetail.RowCount;
                        grvPPintervalDetail.RefreshData();
                        grvPPintervalDetail.MoveLast();
                        string code = "";
                        if ((1 < lineNum || lineNum == 1) && (lineNum < 9 || lineNum == 9))
                        {
                            code = "00" + lineNum;
                        }
                        if (10 <= lineNum)
                        {
                            code = "0" + lineNum;
                        }
                        grvPPintervalDetail.SetFocusedRowCellValue(grvPPintervalDetail.Columns["PPIntervalCode"], (glucInvCName.EditValue.ToString() + code).ToString());
                    }
                    else
                    {
                        e.Handled = true;//取消默认新增事件
                            MessageBox.Show("请先选择商品大类！");
                    }
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }
        }