}

        }

        下拉列表框关闭时发生事件代码

        private void comboBox4_SelectionChangeCommitted(object sender, EventArgs e)

        {

            string lc_text = comboBox4.Text.Trim();

            string lc_jsbmy = lc_text.Substring(0, 4).Trim();

            textBox6.Text = lc_text.Substring(0, 4).Trim();

            textBox7.Text = lc_text.Substring(5, lc_text.Length - 5).Trim();

            XElement jsFile = XElement.Load(@"ftp://100.100.0.1/yhcd1/XMLJssj.xml");

            string lc_cdbms = string.Empty;

            foreach (var p in jsFile.Elements("jsbm"))

            {

                if (lc_jsbmy == p.Value.ToString())

                {

                    lc_cdbms = (string)p.Attribute("cdbm");

                    break;

                }

            }

            ln_cdbm1 = lc_cdbms.Split('*');              

            ln_cds = ln_cdbm1.Length;                    

            if (lc_cdbms != string.Empty)

            {

                qx_check(treeView1.Nodes[0]);  

                ln_ljs = 0;                   

                xs_tree(treeView1.Nodes[0]);   调用xs_tree()方法显示树形控件节点复选框

                treeView1.Refresh();                             

            }

            else

            {

                qx_check(treeView1.Nodes[0]);

                treeView1.Refresh();

            }

        }

单击按钮事件中有关角色授权并存入XML文件代码：

        private void button4_Click(object sender, EventArgs e)

        {

            string lc_jsbm = textBox6.Text;