/// <summary>
 /// Save config to path
 /// </summary>
 /// <param name="cfg"></param>
 public void Save(Config cfg)
 {
     if(cfg!=null)
     {
         string str = JsonConvert.SerializeObject(cfg, Formatting.Indented);
         try
         {
             File.WriteAllText(path, str, Encoding.UTF8);
         }
         catch (Exception ex)
         {
             Debug.WriteLine(ex) ;
         }
     }
 }
 /// <summary>
 /// Load config
 /// </summary>
 /// <returns></returns>
 public Config Load()
 {
     Config cfg = new Config();
     if (File.Exists(path))
     {
         try
         {
             string str = File.ReadAllText(path, Encoding.UTF8);
             cfg = JsonConvert.DeserializeObject<Config>(str);
         }
         catch (Exception ex)
         {
             Debug.WriteLine(ex);
         }
     }
     return cfg;
 }