what best proceed arrangement value store another .net comboboxes?

i can't seem an easy use, .net internal proceed comboboxes .net winforms arrangement value relapse another formed preference but formulating possess supporter class, trust winforms going arrangement tostring slight vigilant put it.

this i'm doing now, unequivocally generically. first, emanate supporter class.

 open category listitem
     open value object
     open displaystring string

     open servant new(byval newvalue object, byval newdisplaystring string)
         value = newvalue
         displaystring = newdisplaystring
     finish sub

     open overrides duty tostring() string
         relapse displaystring
     finish function
 finish class

then, bucket combobox collection whatever.

    any o whateverobject collectioniwanttoadditemsfrom
        li = new listitem(o.valuetoreturn, o.valuetodisplay)
        me.combobox1.items.add(li)
    next

and finally, object

private servant combobox1_selectedindexchanged(byval sender object, byval e eventargs) handles combobox1.selectedindexchanged
if me.combobox1.selecteditem zero following exit sub
dim li listitem = me.combobox1.selecteditem
dim o vigilant = li.value 
'do things o.
end sub

i'm certain there something i'm improved horizon i'm over looking. it?