using (var streamWriter = new FileStream("Какой тут путь указывать???", FileMode.OpenOrCreate))
        {

            print("десириализация");
            var xmlSerializer = new XmlSerializer(typeof(SerializableDictionary<int, string>));
            //result = (XmlSerializableDictionary<string, List<string>>)(xmlSerializer.Deserialize(streamReader.BaseStream));
            Record._Record = (SerializableDictionary<int, string>)(xmlSerializer.Deserialize(streamWriter));
        }