Best way to remove items from a collection

Question

What is the best way to approach removing items from a collection in C#, once the item is known, but not it\'s index. This is one way to do it, but it seems inelegant at be

Answer 1

This is my generic solution

public static IEnumerable Remove(this IEnumerable items, Func match)
    {
        var list = items.ToList();
        for (int idx = 0; idx < list.Count(); idx++)
        {
            if (match(list[idx]))
            {
                list.RemoveAt(idx);
                idx--; // the list is 1 item shorter
            }
        }
        return list.AsEnumerable();
    }

It would look much simpler if extension methods support passing by reference ! usage:

var result = string[]{"mike", "john", "ali"}
result = result.Remove(x => x.Username == "mike").ToArray();
Assert.IsTrue(result.Length == 2);

EDIT: ensured that the list looping remains valid even when deleting items by decrementing the index (idx).