WPF Multiple Instances of Windows and MVVM

Question

How do I use multiple windows in an WPF MVVM app?

I have a Main Window with a menu control that needs to open up new instances of the window each time the item it is selected. I need to be able to show windows next to each other, it is a requirement and not page or usercontrol navigation.

Does anyone have an example of doing this?

I've read it is not recommended UI design but it is the requirement I have to implement.

Answer 1

Actually I have this working by using the WindowManager from Caliburn.Micro which seems like an very excellent framework for this type of application. I did look into prism but it seems over complicated and Caliburn is very easy to understand which did meet the requirements. I looked into MVVM Light but the documentation is horrible and lacks examples and I don't have time to figure it out.