熟悉FPSpread控件的来

Question

       /// <summary>
        /// 列表行改变事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void fpSpread1_SelectionChanging(object sender, FarPoint.Win.Spread.SelectionChangingEventArgs e)
        {
            if (this.fpSpread1_Sheet1.ActiveRowIndex >= 0)
            {
                bool changeMother = isChangeMother();
                bool changeBaby = isChangeBaby();
                if (changeMother)
                {
                    if (InductionAdmissionRecords == null || string.IsNullOrEmpty(InductionAdmissionRecords.ID))
                    {
                        mode = 0;
                    }
                    else
                    {
                        mode = 1;
                    }
                    DialogResult dr = MessageBox.Show("是否保存修改的信息？", "修改提示框", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information);
                    if (dr == DialogResult.Yes)
                    {
                        id = this.fpSpread1_Sheet1.Cells[e.CurrentRow, 0].Value.ToString();
                        save();
                        refreshList();
                        this.BeginInvoke(
                                (System.Threading.ThreadStart)delegate()
                                {
                                    this.Focus();
                                    int t = e.CurrentRow;
                                    if (this.fpSpread1_Sheet1.RowCount > t)
                                    {
                                        this.fpSpread1_Sheet1.ActiveRowIndex = t;
                                        this.fpSpread1_Sheet1.AddSelection(t, 0, 1, 1);
                                    }
                                }
                                );
                        return;
                    }
}
使用FPSpread：点击第一行切换到第二行后提示信息，点击是，使用异步委托后光标没有定位！哪位高手来解答下。