int ln_null = 0;

                foreach (var cl in yhFile.Elements("yhbm"))

                {

                    if (cl.Value.ToString() == lc_yhbm)

                    {

                        cl.Remove();

                        ln_null = 1;

                        break;

                    }

                }

                if (ln_null == 0)

                {

                    MessageBox.Show("用户编码输入错误，删除失败 !", "系统提示",

 MessageBoxButtons.OK, MessageBoxIcon.Asterisk);

                    return;

                }

                yhFile.Save(@"C:\XMLYhsj.xml");

                string lc_xml = @"C:\XMLYhsj.xml";

                Network network = new Network();

                network.UploadFile(lc_xml, @"ftp://100.100.0.1/yhcd1/XMLYhsj.xml",

"administrator", "1234567", false, 500);

                MessageBox.Show("用户删除成功 !", "系统提示", MessageBoxButtons.OK,

MessageBoxIcon.Asterisk);

            }

            catch (Exception el)

            {