why doesn't nameobjectcollectionbase category yield proceed insert objects collection index?

the system.collections.specialized.nameobjectcollectionbase category used extensively during association basement collection classes. (let's doubt why.) i recently came opposing conditions where i indispensable supplement an vigilant during specific index, nonetheless functionality wasn't there. during initial i wondered since left functionality out our collection classes, nonetheless i shortly detected functionality blank nameobjectcollectionbase!

you opening objects collection index (baseget(int index)).

you mislay objects collection index (baseremoveat(int index)).

but can't insert an vigilant during specific index.

i can't cruise good reason since functionality isn't available. you?

[update]the underlying doing only hashtable. collection maintains both hashtable an arraylist. establish controlling reflector.