public static bool XmlExChange(int oldnum, int newnum)
{
bool res = true;
try
{
string path = Config.PlayMusicListPath;
if (File.Exists(path))
{
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(path);

XmlNodeList nodeList = xmlDoc.SelectSingleNode("musiclist").ChildNodes;
if (nodeList[oldnum].Name == "music" && nodeList[newnum].Name == "music")
{
XmlNode oldxn = nodeList[oldnum];
XmlNode newxn = nodeList[newnum];

XmlNode parent=oldxn.ParentNode;
XmlNode t1=oldxn.NextSibling;
XmlNode t2=newxn.NextSibling;
if(t1!=null)
parent.InsertBefore(newxn,t1);
else
parent.AppendChild(newxn);
if (t2 != null)
parent.InsertBefore(oldxn,t2);
else
parent.AppendChild(oldxn);
xmlDoc.Save(path);

}
}
}
catch
{
res = false;
}
return res;
}

本文转自94cool博客园博客，原文链接：http://www.cnblogs.com/94cool/archive/2009/09/09/1563322.html，如需转载请自行联系原作者