Equals method of System.Collections.Generic.List…?

Question

I\'m creating a class that derives from List...

public class MyList : List {}

I\'ve overridden Eq

Answer 1

public class MyList<T> : List<T>
{
    public override bool Equals(object obj)
    {
        if (obj == null)
            return false;

        MyList<T> list = obj as MyList<T>;
        if (list == null)
            return false;

        if (list.Count != this.Count)
            return false;

        bool same = true;
        this.ForEach(thisItem =>
        {
            if (same)
            {
                same = (null != list.FirstOrDefault(item => item.Equals(thisItem)));
            }
        });

        return same;
    }
}

Answer 2

You can use SequenceEqual linq method on the list since your list implements IEnumerable. This will verify all the elements are the same and in the same order. If the order may be different, you could sort the lists first.