asp.net XmlDocument 读取处理xml

用StreamReader 读取txt文档 :

  /// <summary>
        /// 
        /// </summary>
        /// <param name="Path">要读取的完整的文件路径</param>
        /// <param name="File_Name">单独文件名 ERP_1_IRMA_2008.等</param>
        /// <param name="xmlPath">文件的URL，该文件包含要加载的xml文档</param>
        /// <param name="ErrMessage"></param>
        /// <returns></returns>
        public System.Data.DataTable ImportDomImg(string Path, string File_Name, string xmlPath, ref string ErrMessage)
        {
            System.Data.DataTable dt = this.GetTableColumn(xmlPath);
            StreamReader sr = new StreamReader(Path, Encoding.GetEncoding("GBK"));
            XmlDocument doc = new XmlDocument();
            doc.Load(xmlPath);
            int i = 0;
            XmlElement docroot = doc.DocumentElement;
            while (!sr.EndOfStream)
            {
                i++;
                string[] strContent = sr.ReadLine().Split(new char[] { '|' });//用|把BaaN产生的文档split开
                DataRow dr = dt.NewRow();
                string strCheck = this.CheckDomImg(strContent);
                if (strCheck == "")//经过CheckDomImg方法的检测，数据合法
                {
                    dr[0] = File_Name;
                    dr[1] = this.GetEMS_NO(File_Name);
                    dr[2] = strContent[0].Trim();
                    dr[3] = strContent[1].Trim();
                    dr[4] = strContent[2].Trim();
                    dr[5] = strContent[3].Trim();
                    dr[6] = strContent[4].Trim();
                    dr[7] = strContent[5].Trim();
                    dr[8] = strContent[6].Trim();
                    if (strContent[7].Trim() != "")
                    {
                        dr[9] = strContent[7].Trim();
                    }
                    else
                    {
                        dr[9] = docroot.ChildNodes[9].Attributes[1].Value;
                    }
                    dt.Rows.Add(dr);
                }
                else
                {
                    ErrMessage = File_Name + "第" + i.ToString() + "笔记录出错：" + strCheck;
                    dt.Rows.Clear();
                    sr.Close();
                    return dt;
                }
            }
            sr.Close();
            return dt;
        }