I have a rotator control that has a list of periods bound do it (think like a Category). When I click the button to move to a new selection, I want a grid to update with the information for that period (e.g. grab the ID of the selected period, and query for it). There doesn't seem to be a way to do this server-side though, only on the client. Is my only recourse to use Ajax to pull the data and refresh the grid when something changes in the RadRotator?