XML IList<T> TO DataSet TO DataTable 相互转换

      //遍历XML 获得 DataSet
         //XmlTextReader
          static void Main(string[] args)
        {
            string xmlData = @"D:studyXMLtestXMLtestinDebugookstore.xml";
            DataSet t = ConvertXMLToDataSet(xmlData);
            Console.WriteLine(t);

        }

        private static DataSet ConvertXMLToDataSet(string xmlFile)
        {
            StringReader stream = null;
            XmlTextReader reader = null;
            try
            {
                XmlDocument xmld = new XmlDocument();
                xmld.Load(xmlFile);
                DataSet xmlDS = new DataSet();
                stream = new StringReader(xmld.InnerXml);
                reader = new XmlTextReader(stream);
                xmlDS.ReadXml(reader);
                return xmlDS;
                //DataSet xmlDS = new DataSet();
                //stream = new StringReader(xmlData);
                //reader = new XmlTextReader(stream);
                //xmlDS.ReadXml(reader, XmlReadMode.ReadSchema);
                //return xmlDS;
            }
            catch (Exception ex)
            {
                string strTest = ex.Message;
                return null;
            }
            finally
            {
                if (reader != null)
                    reader.Close();
            }
        } 

 经过调试

 如何把 DataSet 转换成 DataTable  *** 注意，我这里的xml文件节点相对混乱，这样读取出来在Dataset中 有三个DataTable 然后怎么把DataTable 怎么给分离开来！

XML ：

<?xml version="1.0" encoding="utf-8"?>
<books>
  <book genre="update知鸟" ISBN="2-3631-4">
    <title name="csTitle属性">
          <ti>属性值</ti>
          <ti>属性值</ti>
          <ti>
       
    <title>CS从入门到精通</title>
    <author>izhiniao捷</author>
    <price>58.3</price>

</ti>
    </title>
    <author>izhiniao捷</author>
    <price>58.3</price>
  </book>
  <book genre="知鸟" ISBN="2-3631-4">
    <title>CS从入门到精通</title>
    <author>izhiniao</author>
    <price>58.3</price>
  </book>
</books>

  

DataSet 转换成 DataTable：

          List<DataTable> lTb = new List<DataTable>();
            for (int i = 0; i < tttt.Tables.Count; i++)//主要就是这里的循环  
            {
                lTb.Add(tttt.Tables[i]);
            }

IList<T> 转换成 DataSet

这里的类我改成了 自定义的EMInfo，没用范型

/// <summary>
        ///  Ilist<T> 转换成 DataSet
        /// </summary>
        /// <param name="list"></param>
        /// <returns></returns>
        public static DataSet ConvertToDataSet(IList<EMInfo> list) 
        {
            if (list == null || list.Count <= 0)
            {
                return null;
            }

            DataSet ds = new DataSet();
            DataTable dt = new DataTable(typeof(EMInfo).Name);
            DataColumn column;
            DataRow row;

            System.Reflection.PropertyInfo[] myPropertyInfo = typeof(EMInfo).GetProperties(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance);

            foreach (EMInfo t in list)
            {
                if (t == null)
                {
                    continue;
                }

                row = dt.NewRow();

                for (int i = 0, j = myPropertyInfo.Length; i < j; i++)
                {
                    System.Reflection.PropertyInfo pi = myPropertyInfo[i];

                    string name = pi.Name;

                    if (dt.Columns[name] == null)
                    {
                        column = new DataColumn(name, typeof(String));
                        dt.Columns.Add(column);
                    }

                    row[name] = pi.GetValue(t, null);
                }

                dt.Rows.Add(row);
            }

            ds.Tables.Add(dt);

            return ds;
        }