C# xml操作

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml;
using System.Reflection;
using System.IO;

namespace hyye
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            //cn.gov.zjoaf.radio.IsynchrodataWebService hyyewebservice = new cn.gov.zjoaf.radio.IsynchrodataWebService();
            XmlDocument doc = new XmlDocument();
            //從嵌入資源內讀取 BlockSet.xml 
            Assembly asm = Assembly.GetExecutingAssembly();//讀取嵌入式資源
            Stream sm = asm.GetManifestResourceStream("hyye.demo.xml");
            doc.Load(sm);
            //獲取xml文件的節點可以這樣：
            XmlNode Node_root = doc.SelectSingleNode("synchronize");//root
            foreach (XmlNode subNode in Node_root.ChildNodes)
            {
                if (subNode.Name == "rsrequisition")//電臺執照基本信息
                {
                    foreach (XmlNode subNode_a in subNode.ChildNodes)
                    {
                        XmlElement param = (XmlElement)subNode_a;//將節點轉換一下類型
                        if (param.GetAttribute("name") == "townidea")
                        {
                            param.InnerText = "程序寫入的同意";
                        }
                    }
                }
                //...其他類型
               
            }
            //string str = hyyewebservice.saveRSRequisition(doc.InnerXml ,"","");
            Label1.Text = doc.InnerXml;
        }
    }
}