wpf - Get a rectangle of a newly added ListViewItem -

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i add new record listview's itemssource collection:

source.add(newrecord);

after action i'm trying rectangle of corresponding item:

listviewitem newitem = list.itemcontainergenerator.containerfromitem(newrecord) listviewitem; rect rc = layoutinformation.getlayoutslot(newitem);

but, unfortunately, rc (0, 0, 0, 0). seems when call getlayoutslot method, new listviewitem not yet arranged. how can obtain correct information directly after adding new record?

any appreciated.

calling list.updatelayout(); before line listviewitem newitem = ... should rectangle immediately.

but generally, not recommend use updatelayout() anywhere in wpf program. layout procedures in wpf asynchronous performance reasons. therefore, better if program determined rectangles of list items @ later point in time.

here mean "later point in time":

source.add(newrecord);  dispatcher.begininvoke(dispatcherpriority.loaded,     new action(() =>     {         listviewitem newitem = list.itemcontainergenerator.containerfromitem(newrecord) listviewitem;         rect rc = layoutinformation.getlayoutslot(newitem);         system.diagnostics.debug.writeline("rc = " + rc);     }));

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