Dispose on user controls, really meant to edit the .designer.cs file?

Question

For a user control with internal data structures that must be disposed, is the correct place to add that code to the Dispose method in the .designer.cs file, or is there an

Answer 1

Could you clarify what kind of controls? ASP.NET, WinForms?

In ASP.NET you could:

protected override void OnUnload(EventArgs e){
     base.OnUnload(e);
     //Unload here...
}