private void button1_Click(object sender, EventArgs e)
        {
            string text = textBox2.Text.Trim();

            if (text == string.Empty)
            {
                MessageBox.Show("节点标识不能为空!");
                return;
            }
            string name = textBox3.Text.Trim();

            if (name == string.Empty)
            {
                MessageBox.Show("节点名称不能为空!");
                return;
            }
            int imageindex         = Convert.ToInt32(comboBox1.SelectedIndex);
            int selectedimageindex = Convert.ToInt32(comboBox2.SelectedIndex);
            int parentid           = Convert.ToInt32(parentnode.Tag);
            int afternode          = Convert.ToInt32(comboBox3.SelectedIndex);

            if (afternode == -1)
            {
                MessageBox.Show("请选择新增节点的后节点!");
                return;
            }
            if (Convert.ToInt32(comboBox3.SelectedIndex) != (comboBox3.Items.Count - 1))//如果该节点不是添加到最后
            {
                TreeNodes.UpdateParentIndexAdd(parentid, afternode);
            }
            string sql = "insert into treenodes_tab t (t.name,t.text,t.imageindex,t.selectedimageindex,t.parent_id,t.flag,t.parent_index) values ('" + name + "','" + text + "'," + imageindex + "," + selectedimageindex + "," + parentid + ",'" + flag + "'," + afternode + ")";

            User.UpdateCon(sql, DataAccess.OIDSConnStr);
            if (flag == "Y")
            {
                int n = 0;
                for (int i = 0; i < checkedListBox1.Items.Count; i++)
                {
                    if (checkedListBox1.GetItemChecked(i))
                    {
                        n++;
                        checkedListBox1.SetSelected(i, true);
                        int    privilegeid = Convert.ToInt32(checkedListBox1.SelectedValue);
                        string sqlstr      = "insert into privilege_node_tab t ( t.privilege_id,t.node_id) values (" + privilegeid + ",(select max(d.id) from treenodes_tab d))";//添加该节点的权限设置关系
                        User.UpdateCon(sqlstr, DataAccess.OIDSConnStr);
                        SetPrivilegetoParentnode(privilegeid, parentid);
                    }
                }
                if (n == 0)
                {
                    MessageBox.Show("请选择权限!", "提示信息", MessageBoxButtons.OK);
                    return;
                }

                MessageBox.Show("添加节点成功!");
            }
            else
            {
                MessageBox.Show("添加节点成功!");
            }
            this.add_setreload();
        }