I know this should be straight forward but my mind feels like mush in picking up WPF and Mere Mortals.

I'm trying to display a form for a vendor when their record is selected from inside a customer tab display. I can get the form to display with

mmAppWPF.WindowManager.Show(new VendorList() );

But I want the vendor form to be owned by the "MainWindow" form not the "Customer" form. How do I reference the "MainWindow" form?

I know "this" references the calling window. As an additional aspect of this, eventually I want the vendor form to come up on a details tab with the selected vendor record displayed.

I know all this should be easy, but the older I get the tougher it is "absorb" new language constructs!

Thanks,
-Sid Meyers.