asp.net ¶ÔXML ¶Áд²é²Ù×÷

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<?xml version="1.0" encoding="utf-8"?>
<corplist>
<corp>
<linkname>³ÂÏÈÉú</linkname>
<corpname>XXXXXXXXX¹«Ë¾</corpname>
<email>xxxxx@126.com</email>
</corp>
<corp>
<linkname>²ÜÏÈÉú</linkname>
<corpname>YYYYYYY¹«Ë¾</corpname>
<email>yyyyyyyyyyyyy@126.com</email>
</corp>
<corp>
<linkname>ÕÅÏÈÉú</linkname>
<corpname>ZZZZZZZZZZ¹«Ë¾</corpname>
<email>zzzzzzzzzzzzzz@126.com</email>
</corp>
</corplist>
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public void add()
{
//³õʼ»¯XML²ÎÊý
string url = Server.MapPath("/CorpManage/Mail.xml");//ÕâÀïдÉÏ·¾¶
XmlDocument xmlDoc = null;
//¼ÓÔØXMLÎĵµ
xmlDoc = new XmlDocument();
xmlDoc.Load(url);
XmlNode root = xmlDoc.SelectSingleNode("corplist");//²éÕÒcorplist½Úµã
//×¼±¸É¾³ýËùÓнڵã(ÈçºÎ²»ÐèÒªÔÚÔö¼Ó֮ǰɾ³ýËùÓбêÇ©£¬ÕⲽʡÂÔ)
root.RemoveAll();
//ÕâÀïÊǸöÑ­»·£¬¼ÙÈçÄúÓÐÊý¾ÝÔ´µÄ»°ÔòÑ­»·ÄúµÄÊý¾ÝÔ´
for (int i = 0; i < 4; i++)
{
//ÕâÀïµÄÊý¾ÝÎÒÊÇÂÒдµÄ......
string linkname = String.Format("aaaa{0}", i.ToString());
string corpname = String.Format("aaaa{0}¹«Ë¾", i.ToString());
string mail = String.Format("aaaa{0}@126.com", i.ToString());
//ÍùXMLÖвåÈëÊý¾Ý
try
{
//´´½¨Ò»¸öcorpÔªËØ
XmlElement xe1 = xmlDoc.CreateElement("corp");
//corpµÄ×ÓÔªËØlinkname
XmlElement xesub1 = xmlDoc.CreateElement("linkname");
xesub1.InnerText = linkname;
xe1.AppendChild(xesub1);
//corpµÄ×ÓÔªËØcorpname
XmlElement xesub2 = xmlDoc.CreateElement("corpname");
xesub2.InnerText = corpnam