FlexGrid中数据的增删操作与节点移动

  #region 添加项目与移除项目.
        //添加项目.
        private void btnAdd_Click(object sender, EventArgs e)
        {
            try
            {
                if (this.tvwItemCanUse.SelectedNode == null) { return; };
                //将左侧选中项移动到右侧
                TreeNode node = tvwItemCanUse.SelectedNode;
                tvwItemCanUse.Nodes.Remove(node);
                this.flexShowData.Rows.Add();
                this.flexShowData.SetData(this.flexShowData.Rows.Count - 1, 0, node.Tag);
                this.flexShowData.SetData(this.flexShowData.Rows.Count - 1, 1, node.Text);
                this.flexShowData.SetData(this.flexShowData.Rows.Count - 1, 2, node.Text);
            }
            catch (Exception exp)
            {
                MessageBox.Show("添加项目失败" + exp.Message, MyResourceManager.GetString("GL_ProductName"), MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        } 

         List<string> fkeyList = new List<string>();
        //移除(右侧添加到左侧)
         private void btnRemove_Click(object sender, EventArgs e)
         {
             if (this.flexShowData.Rows.Count <= 1) { return; }
             //将右侧项移动到左侧项
             foreach (C1.Win.C1FlexGrid.Row item in this.flexShowData.Rows.Selected)
             {
                 TreeNode node = new TreeNode();