Property Grid Description Panel

We have a PropertyGrid with the SelectedObject bound to a MultipleObjectWrapper.  We have then followed the How To -> Show a Description Panel? from the help file.

The description panel correctly displays the name and description for the selected property, however when the selection is cleared (the MultipleObjectWrapper gets replaced with an instance containing no items) the grid displays “No properties match the search criteria” but the Description Panel continues to display the details of the last property that was selected.

We’ve added some debugging code and found that when the selected objects get cleared the SelectedGridItem changed event doesn’t fire, which is likely why the panel isn’t clearing.

Could you confirm whether we are approaching this correctly?

Your approach sounds fine; rather, it sounds like we need to set the SelectedGridItem to null when the selected object changes.  I've added support for this and it will be in the next nightly build (2 Oct 2009).

Note that if you are handling the SelectedGridItemChanged event explicitly, you will need to check for a null row if you aren't doing this already; if you are binding to SelectedGridItem then it should just work.