无标题WPF窗口,拖动,关闭

   public partial class SecondWindow : Window
    {
        public SecondWindow()
        {
            InitializeComponent();
        }

        private void Window_MouseMove(object sender, MouseEventArgs e)
        {
            if (e.LeftButton == MouseButtonState.Pressed)
            {
                this.DragMove();
            }
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            this.Close();
        }
    }