属性通知

WPF的VM中常用到INotifyPropertyChanged接口，来通知属性变更，但需要填写具体属性名。

这里有个编译器解释属性CallerMemberName可以简化这部分工作量。

简化前：

public class Dto : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler? PropertyChanged;

        private string _name = "";
        public string Name
        {
            get { return _name; }
            set { _name = value; OnPropertyChanged(nameof(Name)); }
        }

        private void OnPropertyChanged(string propertyName)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
    }

简化后：

public class Dto : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler? PropertyChanged;

        private string _name = "";
        public string Name
        {
            get { return _name; }
            set { _name = value; OnPropertyChanged(); }
        }

        private void OnPropertyChanged([CallerMemberName] string propertyName = null)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
    }