XML操作代码

     写XML文档  
    using System;  
      
    using System.Collections;  
      
    using System.Configuration;  
      
    using System.Data;  
      
    using System.Linq;  
      
    using System.Web;  
      
    using System.Web.Security;  
      
    using System.Web.UI;  
      
    using System.Web.UI.HtmlControls;  
      
    using System.Web.UI.WebControls;  
      
    using System.Web.UI.WebControls.WebParts;  
      
    using System.Xml.Linq;  
      
    using System.Xml;  
      
    using System.Text;  
      
       

      
    public partial class _20110327XML_XMLWriter : System.Web.UI.Page  
      
    {  
      
        protected void Page_Load(object sender, EventArgs e)  
      
        {  
        }  
      
        public string StrXml  
      
        {  
      
            get {  
      
                return Convert.ToString(ViewState["StrXml"]);  
            }  
      
            set {  
      
                ViewState["StrXml"] = value;  
            }  
        }  
        protected void btnXMLWriter_Click(object sender, EventArgs e)  
      
        {        //生成XmlTextWriter类的实例  
      
            XmlTextWriter writer = new XmlTextWriter(Server.MapPath("book.xml"), Encoding.UTF8);