if (FormZct.lc_cdbms == string.Empty)

            {

                MessageBox.Show("你的用户角色没有授权 ！", "系统提示",

MessageBoxButtons.OK, MessageBoxIcon.Asterisk);

                return;

            }

            this.Close();      //退出此窗体进入菜单系统

        }

    文本框不再是窗体的活动控件时发生事件代码：

        private void textBox1_Leave(object sender, EventArgs e)

        {

            FormZct.lc_yhbms = textBox1.Text;

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

            int t = 0;

            foreach (var p in yhFiles.Elements("yhbm"))

            {

                if (p.Value.ToString() == FormZct.lc_yhbms)

                {

                    t = 1;

                    label3.Text = "用户姓名";

                    label4.Text = (string)p.Attribute("yhxm");

                    lc_yhmm = (string)p.Attribute("yhmm");

                    lc_yhxms = (string)p.Attribute("yhxm");

                    lc_jsmcs = (string)p.Attribute("jsmc");

                    lc_dwmcs = (string)p.Attribute("dwmc");

                    lc_jsbms = (string)p.Attribute("jsbm");

                    break;

                }

                else

                {