every time think get wpf/xaml unintuitive come (rant over)...
i want implement "poor's man" toggle button menu item. essentially, when it's checked should "metric" , when it's unchecked - "imperial". thought should straightforward xaml, can't work.
here's tried:
<menuitem ischeckable="true" ischecked="true"> <style> <style.triggers> <trigger property="ischecked" value="true"> <setter property="header" value="metric"/> </trigger> <trigger property="ischecked" value="false"> <setter property="header" value="imperial"/> </trigger> </style.triggers> </style> </menuitem> it gives me error "the member 'ischecked' not recognized or not accssible" (same header).
the error goes away when <style targettype="{x:type menuitem}">, doesn't anything.
i tried directly without <style>
<menuitem.triggers> <trigger...> </menuitem.triggers> first, gave me same error above, when changed property property="menuitem.ischecked" started screaming eventtriggers allowed.
i tried datatrigger (granted, still don't understand differences between triggers):
<datatrigger binding="{binding relativesource={relativesource mode=findancestor, ancestortype={x:type menuitem}}, path=ischecked}" value="true"> <setter property="header" value="metric"/> </datatrigger> no effect.
help... please...
you have assign menuitem's style property declaring <style> child element of <menuitem.style> element.
<menuitem ischeckable="true" ischecked="true"> <menuitem.style> <style targettype="menuitem"> <style.triggers> <trigger property="ischecked" value="true"> <setter property="header" value="metric"/> </trigger> <trigger property="ischecked" value="false"> <setter property="header" value="imperial"/> </trigger> </style.triggers> </style> </menuitem.style> </menuitem> 
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