private static DPSCommonLibrarySetting Load()
 {
     DPSCommonLibrarySetting tmp = null;
     try
     { 
         string json = File.ReadAllText(fileName);
         tmp = JsonConvert.DeserializeObject<DPSCommonLibrarySetting>(json);
     }
     catch(Exception e)
     {
         tmp = new DPSCommonLibrarySetting();
     }
     return tmp;
 }
 public static void Reload()
 {
     instance = Load();
 }