The scenario is that I have a lot of FieldRenderers. These should output data from various places, some from item X and others from item Y. And should be outputting properties f
If you have a lot of FieldRenderer controls and you want to contain the logic inside the markup then you can use the <%# ... %> expression and just call this.DataBind(); at the end of Page.Load. That will then bind all the controls inside your usercontrol.