Sort one list by another

Question

I have 2 list objects, one is just a list of ints, the other is a list of objects but the objects has an ID property.

What i want to do is sort the list of objects b

Answer 1

Here is an extension method which encapsulates Simon D.'s response for lists of any type.

public static IEnumerable SortBy(this IEnumerable sortItems,
                                                         IEnumerable sortKeys,
                                                         Func matchFunc)
{
    return sortKeys.Join(sortItems,
                         k => k,
                         matchFunc,
                         (k, i) => i);
}

Usage is something like:

var sorted = toSort.SortBy(sortKeys, i => i.Key);