WPF combobox in a dialog window - can not select items falling beyond height of window -

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i have dialog window in wpf combobox. when combobox items more, show beyond height of parent dialog window (in open state).

i not able select these items mouse (which falling outside parent dialog window).

one possible solution increase height of parent dialog window, doesn't good.

can help?

try setting maxdropdownheightof combobox 

<combobox maxdropdownheight="100" />

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