Hi my dear guys, i have 2 animations (zoom in and zoom out). How can i execute code only when an animation is completed?

For example:

Code:
Dim anim_SlideOut As Animation.Storyboard = Me.FindResource("SlideOut")
Dim anim_SlideIn As Animation.Storyboard = Me.FindResource("SlideIn")       

        anim_SlideOut.Begin()  <--- start slide out animation (about 1200 ms duration)

       'Now, how can i excecute this code when anim_SlideOut animation is completed?
        With imgMusicCover
            .Source = imgMiniCover1.Source
            .Visibility = Windows.Visibility.Visible
        End With
       
       ....more code here..... hide few controls and show others

       anim_SlideIn.Begin()  <--- when all is finished, i want to show a slide in animation.

I'm using VB, but i can transform from C#, please help me