WPF INotifyPropertyChanged 通过特性减少代码量

在很多地方需要用上INotifyPropertyChanged的接口，MVVM模式，List等集合都会用到。

通常我们使用

  protected void OnChange(PropertyChangedEventArgs args) => PropertyChanged?.Invoke(this, args);

        private OutString _Text;

        public OutString Text
        {
            get => _Text;
            set
            {
                _Text = value;
                OnChange(new PropertyChangedEventArgs("Text"));
            }
        }

 

 

不过可以 使用特性来减少代码量

CallerMemberName可以代替手工输入名称

 

 public class Test:INotifyPropertyChanged
    {
        protected void OnPropertyChanged([CallerMemberName] string name="")
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
        }
        private BitmapImage i;
        public BitmapImage Image { get=>i; set { i = value; OnPropertyChanged(); } }

        public event PropertyChangedEventHandler PropertyChanged;
    }