Hello Hawellek,

I have been looking into your issue and when you set ‘DisplayMemberPath’, filtering is fired only for this column when there is a defined filter item.

This is the design behavior.

Let me know, if you need any further assistance on this matter.

Hi,
I could isolate the issue: without CustomItemsFilter it works over all columns (case sensitive), with set filter and FilterMode="FilterOnAllColumns" it works only on the column that is set in DisplayMemberPath, also the setting ItemsFilter.FieldName is without effect!
Because I have a number (string) in the column to be displayed, the filter does not work, the filter works only with the values of the column set in DisplayMemberPath.

Please, help ... I need the filtering over all columns with case insensitive.

Hello,

Boricua, thank you for your feedback. I am glad that you have managed to solve you issue.

Hawellek, please set the CustomItemFilter in the ‘Initialized’ event instead of in ‘Loaded’.

Nevermind, I forgot to assign filter to control. Works.

Does not work 100% of the time.

It works when there is data where there are both cases for a letter.

Doesn't work when there is only one case for a letter and you filter for the opposite case. Ie: Data = Sam (Capitol S is the only s in all of the data), I filter by s and the control clears box.