读取xml 文件转换成dataset对象

/**//// <summary>
        /// 读取Xml文件信息,并转换成DataSet对象
        /// </summary>
        /// <remarks>
        /// DataSet ds = new DataSet();
        /// ds = CXmlFileToDataSet("/XML/upload.xml");
        /// </remarks>
        /// <param name="xmlFilePath">Xml文件地址</param>
        /// <returns>DataSet对象</returns>
        public static DataSet CXmlFileToDataSet(string xmlFilePath)
        {
            if (!string.IsNullOrEmpty(xmlFilePath))
            {
                string path = HttpContext.Current.Server.MapPath(xmlFilePath);
                StringReader StrStream = null;
                XmlTextReader Xmlrdr = null;
                try
                {
                    XmlDocument xmldoc = new XmlDocument();
                    //根据地址加载Xml文件
                    xmldoc.Load(path);

                    DataSet ds = new DataSet();
                    //读取文件中的字符流
                    StrStream = new StringReader(xmldoc.InnerXml);
                    //获取StrStream中的数据
                    Xmlrdr = new XmlTextReader(StrStream);
                    //ds获取Xmlrdr中的数据
                    ds.ReadXml(Xmlrdr);
                    return ds;
                }
                catch (Exception e)
                {
                    throw e;
                }
                finally
                {
                    //释放资源
                    if (Xmlrdr != null)
                    {
                        Xmlrdr.Close();
                        StrStream.Close();
                        StrStream.Dispose();
                    }
                }
            }
            else
            {
                return null;
            }
        }