将XmlDocument转成DataSet

private void Page_Load(object sender, System.EventArgs e)   {    // 在此处放置用户代码以初始化页面    XmlDocument dc = new XmlDocument();    dc.Load("D://我的文档//Visual Studio Projects//asp.net//XMLDemo//XMLFile1.xml");    XmlNodeReader reader = new XmlNodeReader(dc);    DataSet ds = new DataSet();    ds.ReadXml(reader);    reader.Close();    this.DataGrid1.DataSource =ds.Tables[0].DefaultView;    this.DataGrid1.DataBind();   }