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  public MainWindow()
        {
            InitializeComponent();
         /*   DispatcherTimer timer = new DispatcherTimer();
            timer.Interval = TimeSpan.FromMilliseconds(500);
            timer.Tick += rysuj;
            timer.Start();
           */ test.SizeChanged += rysuj;
        }

        void rysuj(object sender, EventArgs e)
        {
            test.Children.Clear();
            double wysokosc = test.ActualHeight;
            double szerokosc = test.ActualWidth;
            double help = 0;
            double help2 = 0;
            SolidColorBrush redBrush = new SolidColorBrush();
            redBrush.Color = Colors.Red;
            SolidColorBrush greenBrush = new SolidColorBrush();
            greenBrush.Color = Colors.Green;
            for (int i = 1; i <= 2; i++)
            {

                Line one = new Line {X1=help,Y1 =0,X2=help,Y2=wysokosc-1,Name='A'+ Convert.ToString(i)};
                one.Stroke = redBrush;
                one.StrokeThickness = 1;
                test.Children.Add(one);
                help += szerokosc / 2;
            }
            for (int i = 1; i <= 2; i++)
            {

                Line one = new Line { X1 = 0, Y1 = help2, X2 = szerokosc-1, Y2 = help2, Name = 'B' + Convert.ToString(i) };
                one.Stroke = greenBrush;
                one.StrokeThickness = 1;
                test.Children.Add(one);
                help2 += wysokosc / 2;
            }



        }