c# - List INotifyPropertyChanged 事件

Question

我有一个简单的类，它有一个字符串属性和一个列表属性，我实现了 INofityPropertyChanged 事件，但是当我执行 .Add 到字符串列表时，这个事件没有命中，所以我的转换器没有显示在 ListView 中打。我猜更改的属性未命中添加到列表....我如何以某种方式实现此属性更改事件命中？？？

我需要使用其他类型的集合吗？!

感谢您的帮助!

namespace SVNQuickOpen.Configuration
{
    public class DatabaseRecord : INotifyPropertyChanged 
    {
        public DatabaseRecord()
        {
            IncludeFolders = new List<string>();
        }

        #region INotifyPropertyChanged Members

        public event PropertyChangedEventHandler PropertyChanged;

        protected void Notify(string propName)
        {
            if (this.PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propName));
            }
        }
        #endregion

        private string _name;

        public string Name
        {
            get { return _name; }

            set
            {
                this._name = value;
                Notify("Name");
            }
        }

        private List<string> _includeFolders;

        public List<string> IncludeFolders
        {
            get { return _includeFolders; }

            set
            {
                this._includeFolders = value;
                Notify("IncludeFolders");
            }
        }
    }
}

Answer 1

你应该使用 ObservableCollection<string>而不是 List<string> ，因为不像 List , ObservableCollection当其内容发生变化时，将通知家属。

在你的情况下我会做 _includeFolders只读 - 您始终可以使用集合的一个实例。

public class DatabaseRecord : INotifyPropertyChanged 
{
    private readonly ObservableCollection<string> _includeFolders;

    public ObservableCollection<string> IncludeFolders
    {
        get { return _includeFolders; }
    }

    public DatabaseRecord()
    {
        _includeFolders = new ObservableCollection<string>();
        _includeFolders.CollectionChanged += IncludeFolders_CollectionChanged;
    }

    private void IncludeFolders_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
    {
        Notify("IncludeFolders");
    }

    ...

}