Question

Does System.String.Split() ever return null? (.NET)

I know I’ve been coding in the belief that it does not, however, upon reading the docs I do not see such a statement. Since there is no such a statement in the docs, so I want to ask in the experience of the community has anyone actually encountered the case that string.Split returns null?

Answer 1

No, it cannot return null. If you look at the source of it, it even guarantees it with code contracts:

public String[] Split(params char[] separator) {
    Contract.Ensures(Contract.Result<String[]>() != null);

All public overloads also make the same guarantee.