Ok, in this example you can see two issues. I have found why is this happening. If column name and mapping name are different than filter bar isn't working. This is not a big problem since I don't have reasons to keep them different.
Second issue: FilterBar is displaying ValueMembers instead of Display members. Not good.
Question: How can I support incremental search in GGC? Actually I want Autocomplete support in FilterBar so that users can type first few letters and grid filters all rows that are containing that letters in column. I need this functionality.
Thanks.
ExampleGrid.zip