>>If you may need to do this a lot (and with controls other than a combobox) then you could use reflection to create the control and to spin through and set the properties.
>>Something like this : http://www.codeproject.com/Articles/12976/How-to-Clone-Serialize-Copy-Paste-a-Windows-Forms
>
>That would be useful.

That example may be overkill. It boils down to this:

Public Function CloneControl(control As System.Windows.Forms.Control) As System.Windows.Forms.Control
	Dim clone As System.Windows.Forms.Control = DirectCast(Activator.CreateInstance(control.[GetType]()), System.Windows.Forms.Control)

	For Each [property] As PropertyDescriptor In TypeDescriptor.GetProperties(control)
		If [property].PropertyType.IsSerializable Then
			[property].SetValue(clone, [property].GetValue(control))
		End If
	Next
	Return clone
End Function

Then:

ComboBox cb1 = new ComboBox();
            ComboBox cb2 = (ComboBox) CloneControl(cb1);

(Not tested)