public PopupMsg(TextBlock msg)
{
//Store TextBlock for message display
this.msg = msg;
//Register the textblock's name, this is necessary for creating Storyboard using codes instead of XAML
NameScope.SetNameScope(msg, new NameScope());
msg.RegisterName("fadetext", msg);
//Create the fade in & fade out animation
DoubleAnimationUsingKeyFrames fadeInOutAni = new DoubleAnimationUsingKeyFrames();
LinearDoubleKeyFrame keyframe = new LinearDoubleKeyFrame();
keyframe.KeyTime = KeyTime.FromTimeSpan(TimeSpan.FromSeconds(2));
keyframe.Value = 1;
fadeInOutAni.KeyFrames.Add(keyframe);
//keyframe = new LinearDoubleKeyFrame();
fadeInOutAni.Duration = new Duration(TimeSpan.FromSeconds(4));
fadeInOutAni.AutoReverse = true;
fadeInOutAni.AccelerationRatio = .2;
fadeInOutAni.DecelerationRatio = .7;
// Configure the animation to target the message's opacity property
Storyboard.SetTargetName(fadeInOutAni, "fadetext");
Storyboard.SetTargetProperty(fadeInOutAni, new PropertyPath(TextBlock.OpacityProperty));
// Add the fade in & fade out animation to the Storyboard
Storyboard fadeInOutStoryBoard = new Storyboard();
fadeInOutStoryBoard.Children.Add(fadeInOutAni);
// Set event trigger, make this animation played on an event we can control
msg.IsVisibleChanged += delegate(object sender, System.Windows.DependencyPropertyChangedEventArgs e)
{
if (msg.IsVisible) fadeInOutStoryBoard.Begin(msg);
};
}
