单击按钮事件中有关新添加用户并存入XML文件代码：

        private void button1_Click(object sender, EventArgs e)

        {

            XElement yhFile = XElement.Load(@"ftp://100.100.0.1/yhcd1/XMLYhsj.xml");

            string lc_yhbm = textBox1.Text.Trim();

            string lc_yhxm = textBox2.Text.Trim();

            string lc_cdbms = string.Empty;

            string lc_dwmc = textBox3.Text.Trim();

            string lc_jsmc = textBox4.Text.Trim();

            string lc_yhmm1 = textBox5.Text.Trim();

            string lc_yhmm2 = textBox10.Text.Trim();

            if (lc_yhmm1 != lc_yhmm2)

            {

                MessageBox.Show("两次输入的密码不相等,请重新输入 !", "系统提示",

MessageBoxButtons.OK, MessageBoxIcon.Asterisk);

                textBox5.Text = string.Empty;

                textBox10.Text = string.Empty;

                return;

            }

            string lc_scmm = oper.mmjmsc(lc_yhmm1);   //调用密码加密输出方法

            try

            {

                XElement menu = new XElement("yhbm",

                    new XAttribute("yhxm", lc_yhxm),

                    new XAttribute("dwbm", lc_dwbm),

                    new XAttribute("dwmc", lc_dwmc),

                    new XAttribute("jsbm", lc_jsbm),

                    new XAttribute("jsmc", lc_jsmc),

                    new XAttribute("yhmm", lc_scmm), lc_yhbm);