asp.net讀取Xml返回IList集合

Xml檔案：

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<?xml version="1.0" encoding="UTF-8"?><DirectoryListing>  <Services1>    <Name>基本服務</Name>    <Price>100</Price>    <Date>30</Date>    <Type>1</Type>  </Services1>  <Services2>    <Name>資訊增值服務</Name>    <Price>100</Price>    <Date>30</Date>    <Type>2</Type>  </Services2>  <Services3>    <Name>電話預約委託服務</Name>    <Price>150</Price>    <Date>20</Date>    <Type>3</Type>  </Services3></DirectoryListing>

根據Xml檔案 ，產生實體類：

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   [Serializable]  public  class Serveris    {      public Serveris() { }      public string Name { get;set;}      public decimal Price { get; set; }      public int Date { get; set; }      public int Type { get; set; }     }

.cs檔案實現 方法讀取Xml：

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public IList<Serveris> Xml()    {        IList<Serveris> list = new List<Serveris>();        //建立XmlDocument對象        XmlDocument xmlDoc = new XmlDocument();        string filen = Server.MapPath("~/XMLServices.xml");        //載入xml檔案名稱        xmlDoc.Load(filen);        //讀取根節點的所有子節點，放到xn0中         XmlNodeList xn0 = xmlDoc.SelectSingleNode("DirectoryListing").ChildNodes;        //尋找二級節點的內容或屬性         foreach (XmlElement oon in xn0)        {            Serveris ser = new Serveris();            ser.Name = oon.GetElementsByTagName("Name")[0].InnerText;            ser.Price = Convert.ToDecimal(oon.GetElementsByTagName("Price")[0].InnerText);            ser.Date = Convert.ToInt32(oon.GetElementsByTagName("Date")[0].InnerText);            ser.Type = Convert.ToInt32(oon.GetElementsByTagName("Type")[0].InnerText);            list.Add(ser);        }        return list;    }