using System.Diagnostics; namespace System.Collections.Generic { internal sealed class ICollectionDebugView<T> { private readonly ICollection<T> _collection; [DebuggerBrowsable(DebuggerBrowsableState.RootHidden)] public T[] Items { get { T[] array = new T[_collection.Count]; _collection.CopyTo(array, 0); return array; } } public ICollectionDebugView(ICollection<T> collection) { if (collection == null) throw new ArgumentNullException("collection"); _collection = collection; } } }