What is the best way to convert an IEnumerator to a generic IEnumerator?

Question

I am writing a custom ConfigurationElementCollection for a custom ConfigurationHandler in C#.NET 3.5 and I am wanting to expose the IEnumerator as a generic IEnumerator.

Answer 1

IEnumerable already derives from IEnumerable so there's no need to do any conversion. You can simply cast to it...well actually it's implicit no cast necessary.

IEnumerable enumerable = GetGenericFromSomewhere();
IEnumerable sadOldEnumerable = enumerable;
return sadOldEnumerable.GetEnumerator();

Going the other way round isn't much more difficult with LINQ:

var fancyEnumerable = list.OfType();
return fancyEnumerable.GetEnumerator();