I'm trying to implement the filtering from code-behind and I got it to successfully filter using the following:
ColumnFilterDescriptor cfd =
cfd.FieldFilter.FieldName = col.Member;
while it works, the UI display does not properly filter it. I've attached an image to show the issue.
I've searched the forums a few times and it looks like the DistinctValues of the RadGridView is used to generate the list of checkboxes.. however, I can't find a place where I can select/make the checkboxes check according to the filters that is being applied.