For the life of me, I've been trying to search of a way to manually initialize a radcombobox. I'm able to initialize it via the ItemsRequested event like so
IlkIndustryTaxonomyTier3Source = _IlkIndustryTaxonomyTier3Manager.List()
_view.GetrcbMacroOTHemscott3.DataSource = IlkIndustryTaxonomyTier3Source
But this is only called upon firing the said event.