public static void set_pwd(string user, string value)
{
XElement x = new XElement("Item");
x.SetElementValue("sn", MD5Value(value + user + "1r%4#", true));
pwds.AddConfig(user, x);
pwds.SaveConfigToFile();
}
static public void SaveAppConfig()
{
app_cfg.AddConfig(app_cfg.cfg_name, curr_cfg);
app_cfg.SaveConfigToFile();
}