xmlдÈë·½·¨ - .NET¼¼Êõ / ASP.NET

C# code:
/// <summary>
/// ½«·¢ÌûÄÚÈݱ£´æµ½XMLÎļþÖеķ½·¨
/// </summary>
/// <param name="filename">XMLÎļþ·¾¶È«Ãû</param>
/// <param name="title">XMLÎļþ·¾¶È«Ãû</param>
/// <param name="content">XMLÎļþ·¾¶È«Ãû</param>
/// <param name="user">XMLÎļþ·¾¶È«Ãû</param>
public void AddXML(string filename,string title,string content,string user)
{
//³õʼ»¯XMLÎĵµ²Ù×÷Àà
XmlDocument mydoc = new XmlDocument();
//¼ÓÔØÖ¸¶¨µÄXMLÎļþ
mydoc.Load(filename);

//Ìí¼ÓÔªËØ-Ìû×ÓÖ÷Ìâ
XmlElement ele = mydoc.CreateElement("title");
XmlText text = mydoc.CreateTextNode(title);
//Ìí¼ÓÔªËØ-·¢Ìûʱ¼ä
XmlElement ele1 = mydoc.CreateElement("posttime");
XmlText text1 = mydoc.CreateTextNode(DateTime.Now.ToString());
//Ìí¼ÓÔªËØ-ÄÚÈÝ
XmlElement ele2 = mydoc.CreateElement("content");
XmlText text2 = mydoc.CreateTextNode(content);
//Ìí¼ÓÔªËØ-·¢ÌûÈË
XmlElement ele3 = mydoc.CreateElement("postuser");
XmlText text3 = mydoc.CreateTextNode(user);

//Ìí¼ÓÎļþµÄ½Úµã-msgrecord
XmlNode newElem = mydoc.CreateNode("element", "xmlrecord", "&qu