wpf: changes textbox concentration aren't committed until after shutting eventuality fires

i have wpf window modifying database information, represented controlling an entity horizon object. user closes window, i'd notice shutting eventuality presumably information altered arrangement summary box charity save changes database.

unfortunately, changes now focused correct aren't indifferent contracting source until correct loses focus, happens during indicate after shutting eventuality processed.

ideally, there slight commits changes perspective hierarchy i before checking entity modified. i've also looked information programmatically clearing concentration control focus, nonetheless can't figure out it.

my doubt is, typically handled?