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   源码介绍

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    public class ObservableObject: INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

        public bool SetProperty<T>(ref T storage, T value, [CallerMemberName] string propertyName = null)
        {
            if (object.Equals(storage, value)) return false;
            storage = value;
            this.OnPropertyChanged(propertyName);
            return true;
        }

        protected void OnPropertyChanged([CallerMemberName] string propertyName = null)
        {
            var eventHandler = this.PropertyChanged;
            if (null != eventHandler)
            {
                eventHandler(this, new PropertyChangedEventArgs(propertyName));
            }
        }

    }