Longhorn Animations and Timelines Part I

After a suggestion from DonXML, I left the world of manually starting up LengthAnimations bound to width and height properties of a Canvas control I had implemented via code, and took up the task of learning the Timeline object.

My goal was to have a Canvas, click on it, and zoom the width and height to the full size of the container Canvas, and stop when it reached the largest point. Let's check out some code (note, the SDK docs are a little unclear on how to do some of this, but the SDK team is on the right track with ease of how to find what is there...):

Timeline wTL = new Timeline();
wTL.StatusOfNextUse = UseStatus.ChangeableReference;
wTL.Enable(Timeline.Root);

LengthAnimationCollection w = GetAnimationCollection(MainPanel.Width.Value,wTL);
c.SetAnimations(Canvas.WidthProperty, w);
w.SetDefaultParentTimeline(wTL);

wTL.RepeatCount = 0;
wTL.AutoReverse = false;
wTL.Fill = TimeFill.Hold;
wTL.FillDefault = TimeFill.Hold;

wTL.Enable();
wTL.BeginIn(0);

...

private LengthAnimationCollection GetAnimationCollection(double size, Timeline t)
{

LengthAnimation la = new LengthAnimation();
la.To = new Length(size);
la.Duration = new Time(1000);
la.BeginIn(0);
la.AutoReverse = false;
la.RepeatCount = 0;
la.ParentTimeline = t;
la.InterpolationMethod = InterpolationMethod.Paced;
LengthAnimationCollection col = new LengthAnimationCollection();
col.Add(la);
return col;

}