private void OnResetConfig()
{
String xml = this.rootPath + "\\" + "app.config";
Uri uriResource = new Uri(xml, UriKind.RelativeOrAbsolute);
XElement doc = XElement.Load(xml);
// Refresh the new value
doc.Element("app").SetElementValue("name", this.txt_Title.Text);
doc.Element("okrbook").SetElementValue("intro", this.description);
doc.Element("okrbook").SetElementValue("name", this.txt_Title.Text);
doc.Save(xml);
}