WPF animation oscillation and Springiness easemode

//xaml
<Window x:Class="WpfApp198.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp198"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <Button 
            x:Name="springBtn"
            Content="Oscillation and Spring "
            Width="800"
            Height="200"
            HorizontalAlignment="Center"
            VerticalAlignment="Center"
            Click="springBtn_Click"/>
    </Grid>
</Window>


//xaml.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace WpfApp198
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void springBtn_Click(object sender, RoutedEventArgs e)
        {
            var springAnimation = new DoubleAnimation
            {
                From = 1.0,
                To = 1.5,
                Duration = TimeSpan.FromMilliseconds(1500),
                AutoReverse =true,
                EasingFunction=new ElasticEase
                {
                    Oscillations=10,
                    Springiness=4,
                    EasingMode=EasingMode.EaseOut,
                },
                RepeatBehavior=RepeatBehavior.Forever
            };

            var scaleTransform = new ScaleTransform(1.0, 1.0);
            springBtn.RenderTransform= scaleTransform;
            springBtn.RenderTransformOrigin = new Point(0.5, 0.5);
            scaleTransform.BeginAnimation(ScaleTransform.ScaleXProperty,springAnimation);
            scaleTransform.BeginAnimation(ScaleTransform.ScaleYProperty,springAnimation);
        }
    }
}