Pro WPF in C# 2010: Windows Presentation Foundation in .NET 4

16.2. Key Frame Animation

All the animations you've seen so far have used linear interpolation to move from a starting point to an ending point. But what if you need to create an animation that has multiple segments and moves less regularly? For example, you might want to create an animation that slides an element into view quickly and then slowly moves it the rest of the way into place. You could achieve this effect by creating a sequence of two animations and using the BeginTime property to start the second animation after the first one. However, there's an easier approach—you can use a key frame animation.

A key frame animation is an animation that's made up of many short segments. Each segment represents an initial, final, or intermediary ...