This class is a collection of key strings retrieved by the NameObjectCollectionBase.Keys property.

public class NameObjectCollectionBase.KeysCollection : ICollection, IEnumerable {
// Public Instance Properties
   public int Count{get; }
// implements ICollection
   public string this[int index]{get; }
// Public Instance Methods
   public virtual string Get(int index);
   public IEnumerator GetEnumerator( );   
// implements IEnumerable
}