Notify Property Changed using Expression Tree

notify.cs

        private string _filePath;
        public string FilePath
        {
            get { return _filePath; }
            set { _filePath = value; NotifyOfPropertyChange(()=> FilePath); }
        }


        private void NotifyOfPropertyChange<TValue>(Expression<Func<TValue>> propertySelector)
        {
            if (PropertyChanged != null)
            {
                var memberExpression = propertySelector.Body as MemberExpression;
                if (memberExpression != null)
                {
                    PropertyChanged(this, new PropertyChangedEventArgs(memberExpression.Member.Name));
                }
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;