我正在努力解决这个问题。这4个有什么区别？
1. private ObservableCollection<T> _myObservableCollestionOfTs
2. private readonly ObservableCollection<T> _myObservableCollestionOfTs
3. private ReadOnlyObservableCollection<T> _myObservableCollestionOfTs
4. private readonly ReadOnlyObservableCollection<T> _myObservableCollestionOfTs
感谢您的任何帮助 ：）