c# - Where does keyboard focus go when the focused WPF element is removed? -

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i have custom treeview-like control in panel in application. click on items receive keyboard focus.

it's possible select set of items in tree , cut or remove them pressing ctrl-x or delete. when tree items removed, keyboard focus reverts main window.

this leads trouble - if undo cut, elements keyboard focus no longer on panel can't (for example) go cut-undo-cut-undo-cut.

what determines keyboard focus moves when element removed? tried making panel have isfocusscope="true" didn't seem have effect, , focus overview doesn't mention how control focus goes when element removed.

i guess best bet might setting focus manually after undo/redo (maybe encapsulating in behavior listens events focusmanager sends?)

see set focus on textbox in wpf


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