DoubleAnimation の例

Opacity の変更

private void ChangeOpacity(Label label)
{  
    string name = "labelOpacity" + num++;
    this.RegisterName(name, label);

    label.RenderTransform = label.translateTransform;

    DoubleAnimation myDoubleAnimation = new DoubleAnimation();
    myDoubleAnimation.From = 1.0;
    myDoubleAnimation.To = 0.0;
    myDoubleAnimation.Duration = new Duration(TimeSpan.FromSeconds(5));
    myDoubleAnimation.AutoReverse = true;
    myDoubleAnimation.RepeatBehavior = RepeatBehavior.Forever;

    Storyboard.SetTargetName(myDoubleAnimation, name);
    Storyboard.SetTargetProperty(myDoubleAnimation, new PropertyPath(Label.OpacityProperty));

    myStoryboard1.Children.Add(myDoubleAnimation);
}

フォントサイズの変更

private void ChangeFontSize(Label label)
{
    string name = "labelFontSize" + num++;
    this.RegisterName(name, label);

    label.RenderTransform = label.translateTransform;

    DoubleAnimation myDoubleAnimation = new DoubleAnimation();
    myDoubleAnimation.From = 12.0;
    myDoubleAnimation.To = 50.0;
    myDoubleAnimation.Duration = new Duration(TimeSpan.FromSeconds(5));
    myDoubleAnimation.AutoReverse = true;
    myDoubleAnimation.RepeatBehavior = RepeatBehavior.Forever;

    Storyboard.SetTargetName(myDoubleAnimation, name);
    Storyboard.SetTargetProperty(myDoubleAnimation, new PropertyPath(Label.FontSizeProperty));

    myStoryboard1.Children.Add(myDoubleAnimation);
}

Storyboard myStoryboard1 = new Storyboard();

         ChangeOpacity(label1);
         ChangeFontSize(label1);

         myStoryboard1.Begin(label1);