c# – 将单个对象插入json文件而不重写整个文件

// adds a horse to the db
    public int AddHorse(Horse horse)
    {
        // identify and assign next available id to horse
        var horses = GetAllHorses();
        int nextId = horses.Max(h => h.ID) + 1;
        horse.ID = nextId; 

        // Add horse to list
        horses.Add(horse);

        // Write entire list to JSON file. Can I just insert one new horse into the file?
        using (FileStream fs = File.Open(_jsonHorseDbFilePath,FileMode.Create))
        using (StreamWriter sw = new StreamWriter(fs))
        using (JsonWriter jw = new JsonTextWriter(sw))
        {
            jw.Formatting = Formatting.Indented;

            JsonSerializer serializer = new JsonSerializer();
            serializer.Serialize(jw,horses);
        }

        return nextId;
    }

虽然这有效,但对我来说似乎效率低下.理想情况下,我可以简单地将新的Horse对象插入JSON文件而无需重写所有内容.但是,我一直在谷歌四处寻找,并没有找到办法做到这一点.有谁知道这是否可能,如果是的话,在这种情况下我怎么可能接近它？