c# - WPF- MessageBox to be top most -

i have wpf application, need messagebox top most. in win forms that:

system.windows.forms.messagebox.show(new form() { topmost = true }, "sure wanna save?", "confirm", messageboxbuttons.yesno) 

but how do in wpf?

i saw few different answers non of them work me e.g:

messagebox.show(application.current.mainwindow, "im on top - of main window"); 

my mainwindo null. in application messagebox opening different pages- not windows

any idea how in simple way?

you have create own window , set topmost value true.

mywindow dialog = new mywindow(); dialog.topmost = true; dialog.show();