how i supplement dispose functionality c# usercontrol?

i have category implements usercontrol. .net 2005, dispose slight automatically combined myclass.designer.cs biased category record looks this:

  stable overrule vacant dispose(bool disposing)
  {
     (disposing && (components != null))
     {
        components.dispose();
     }
     base.dispose(disposing);
  }

if i wish supplement possess dispose functionality, where i put it? given record generated, i don't wish supplement formula here risk removing blown away.