//        lc_cdbm = node.Parent.Parent.Index.ToString() + lc_cdbm;

                    //    }

                    //}

                }

            }

            newNode.Tag = lc_cdbm;                       //存入Tag

            treeView1.ExpandAll();                         //展开所有节点

            string lc_sxm = string.Empty;

            //以下用 cdbm 变换为 sxm

            switch (lc_cdbm.ToString().Trim().Length)         

            {

                case 1:

                    lc_sxm = "0";

                    break;

                case 2:

                    lc_sxm = "0" + lc_cdbm.ToString().Trim().Substring(0, 1);

                    break;

                case 3:

                    lc_sxm = "0" + lc_cdbm.ToString().Trim().Substring(0, 1) +

lc_cdbm.ToString().Trim().Substring(1, 1);

                    break;

            }

           XElement xmlFile = XElement.Load(@"ftp://100.100.0.1/yhcd1/XMLCdsj.xml");

            try

            {