public void Update(Setting setting)
{
var doc = GetDoc();
var ele = doc.Root.Element("settings").Elements().Where(x => x.Attribute(XName.Get("key")).Value == setting.Key).First();
ele.Value = setting.Value;
doc.Save(xmlfile);
}
public void Insert(Setting setting)
{
var doc = GetDoc();
XElement ele = new XElement("setting");
ele.Add(new XAttribute("key", setting.Key));
ele.Value = setting.Value;
doc.Root.Element(XName.Get("settings")).Add(ele);
doc.Save(xmlfile);
}