List doesn't implements SyncRoot!

Question

Everyone use lot of List. I need to iterate over this list, so I use the known SyncRoot pattern.

Recently I noticed in this post that the SyncRoot should be avoided

Answer 1

It is actually implemented explicitly.

object ICollection.SyncRoot
{
    get
    {
        if (this._syncRoot == null)
        {
            Interlocked.CompareExchange(ref this._syncRoot, new object(), null);
        }
        return this._syncRoot;
    }
}

This means you must cast to ICollection to use it.