DevExpress控件TreeList的复选框(2)

 private void GetCheckedID(TreeListNode parentNode)
        {
            if (parentNode.Nodes.Count == 0)
            {
                return;//递归终止www.2cto.com
            }

            foreach (TreeListNode node in parentNode.Nodes)
            {
                if (node.CheckState == CheckState.Checked)
                {
                    DataRowView drv = treeList1.GetDataRecordByNode(node) as DataRowView;//关键代码
                    if (drv != null)
                    {
                        int GroupID= (int)drv["GroupID"];
                        lstCheckedOfficeID.Add(GroupID);
                    }

  private void btnOK_Click(object sender, EventArgs e)
        {
           
          
            this.lstCheckedOfficeID.Clear();

            if (treeList1.Nodes.Count > 0)
            {
                foreach (TreeListNode root in treeList1.Nodes)
                {