将Xml内容字符串转换成DataSet对象

         /// 将Xml内容字符串转换成DataSet对象
        /// </summary>
        /// <param name="xmlStr">Xml内容字符串</param>
        /// <returns>DataSet对象</returns>
        public static DataSet  CXmlToDataSet(string xmlStr)
        {
            if (!string.IsNullOrEmpty(xmlStr))
            {
                StringReader StrStream = null;
                XmlTextReader Xmlrdr = null;
                try
                {

                   //注意不要使用DataTable ,它会出一些错误
                    DataSet Ds = new DataSet();
                    //读取字符串中的信息
                    StrStream = new StringReader(xmlStr);
                    //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;
            }
        }