MVVM - Close window and open another one from ViewModel with Mediator pattern
When a user has entered a correct password, a login window should close and the main window should open. I would like to do this from the ViewModel, however, the ViewModel may not know anything about the view.

I've searched a lot and apparantly the best way is to use the mediator pattern. I understand how this pattern works, but how to effectivly use it in this case? 

the mediator will need:  
- A reference to the View  
- A reference to the ViewModel

The ViewModel will need a reference to the mediator.

Where do I need to create the mediator? I can't do it in the ViewModel as I won't be able to set the reference to the view. Creating the mediator in the view is an option as I can get the ViewModel out of the DataContext property, but then I will still need to pass the mediator to the ViewModel, which will only make the code more difficult.

How to properly use a mediator for opening/closing windows?

Thanks
MVVM - Close window and open another one from ViewModel with Mediator pattern
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When a user has entered a correct password, a login window should close and the main window should open. I would like to do this from the ViewModel, however, the ViewModel may not know anything about the view.

I've searched a lot and apparantly the best way is to use the mediator pattern. I understand how this pattern works, but how to effectivly use it in this case? 

the mediator will need:  
- A reference to the View  
- A reference to the ViewModel

The ViewModel will need a reference to the mediator.

Where do I need to create the mediator? I can't do it in the ViewModel as I won't be able to set the reference to the view. Creating the mediator in the view is an option as I can get the ViewModel out of the DataContext property, but then I will still need to pass the mediator to the ViewModel, which will only make the code more difficult.

How to properly use a mediator for opening/closing windows?

Thanks