"Please wait" Windows in WPF

I need to create a "please wait" window at the start up of my application, start animation a开发者_JS百科nd at the lifetime of app change visibility. I don`t want create explicitly new thread (Maybe ThreadPool or BackgroundWorker). Any ideas?

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WPF has a very nice splash screen class exactly for that: http://www.codeproject.com/Articles/36418/WPF-Splash-Screen.aspx

Here is the quick steps:

1. Add the image file to the WPF Application project. For more information, see How to: Add Existing Items to a Project.
2. In Solution Explorer, select the image.
3. Add the image file to the WPF Application project. For more information, see How to: Add Existing Items to a Project.
4. In the Properties window, click the drop-down arrow for the Build Action property. Select SplashScreen from the drop-down list

(source here: WPF SplashScreen implementing)