public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {


            DoubleAnimation sld_1anim = new DoubleAnimation(100, TimeSpan.FromMilliseconds(1000));
            sld_1.BeginAnimation(Slider.ValueProperty, sld_1anim);
            DoubleAnimation sld_2anim = new DoubleAnimation(50, TimeSpan.FromMilliseconds(1000));
            sld_2.BeginAnimation(Slider.ValueProperty, sld_2anim);
            DoubleAnimation sld_3anim = new DoubleAnimation(20, TimeSpan.FromMilliseconds(1000));
            sld_3.BeginAnimation(Slider.ValueProperty, sld_3anim);
        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            sld_1.Value = 1;
            sld_2.Value = 1;
            sld_3.Value = 1;

            MessageBox.Show(sld_1.Value.ToString());
            MessageBox.Show(sld_2.Value.ToString());
            MessageBox.Show(sld_3.Value.ToString());

        }
    }