how to enable filtering on user setting stored in profile as binary data in a gridview?

Hi!
I have a Profile with a Property like this:
<properties>
    <add name="UserDetails" type="oUserDetails" serializeAs="Binary"/>
</properties>
How can I show all Users with their Details in a GridWiew and how to enable filtering for values located in the UserDetails class. For example UserDetails.FavouriteColor which is a string.
Thanks,
Zsolt
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