gistfile1.cs

[Serializable]
public class SerialCode
{
  public string Code{set; get;}
  public string GameName{set; get;}
  public string Description{set; get;}
}

public SerialCodeProvider
{
  public List<SerialCode> SerialCodes{set; get;}
  
  public SerialCodeProvider()
  {
    SerialCodes = new List<SerialCode>();
  }
  
  public static SerialCodeProvider Load()
  {
    return (SerialCodeProvider) new BinaryFormatter(new FileStream("pfad", FileMode, FileAccess));
  }
  
  public void Save()
  {
    new BinaryFormatter(new FileStream("pfad", FileMode, FileAccess), this);
  }
}