I've got a column bound to Nullable<bool> (bool?) values.
With the default filter I can only filter the values "true" and "false" but i can't filter for null values.
I tried to set FilterCellEditorStyle and FilterCellValuePresenterStyle. But the problem is, that in both cases the editor stays the XamCheckEditor, which does not support ThreeState.
I just want a ThreeState checkbox in my column header...
How can I achieve this?
Hello,
I am just checking the progress of this issue and was wondering if you managed to achieve your goal or if you need any further assistance on the matter.
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