silverlight - change child window position when opened

How do I change position of childWindow control w开发者_如何学Gohen it is opened?

I want to do that because I want to make resize animation.

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You can do this easily in expression blend. After creating new animation at time frame 0 size will be correct and at time frame 1 re-sizing can be done. Window loaded we can call the storyboard.

Please refer this link