DefaultIfEmpty< TSource >() [2/2]

static IEnumerable< TSource > System.Linq.Enumerable.DefaultIfEmpty< TSource > ( this IEnumerable< TSource > source, TSource defaultValue )

inlinestatic

Definition at line 4553 of file Enumerable.cs.

    {
        if (source == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.source);
        }
        return new DefaultIfEmptyIterator<TSource>(source, defaultValue);
    }

References System.Linq.source, and System.Linq.ThrowHelper.ThrowArgumentNullException().