Add event handler to ASP.net web control without the designer

Question

Is there a convenient way to add an event handler to a web control declaratively (as an attribute on the control in markup) without needing to select the control in the design view for the .aspx/.ascx? Not only would I prefer to avoid the design view, but it is incapable of showing controls properly in many otherwise completely innocuous situations.

I really wonder why the properties panel is so different depending on whether the selection of the control is in the designer view or in the source view.