如何在wpf应用程序启动时显示图像?

I have a wpf application in mvvm pattern. In main view, I have few links to other views. But before displaying the contents(that is ... the links) in main view, I need to display an image in main view ....that means...a welcome image will be displayed first to the user...say for 2 seconds...and then display the actual contents.I have a wpf application in mvvm pattern. In ma