This collection class is used to specify the list of checked items in the CheckedListBox control.

public class CheckedListBox.CheckedItemCollection : IList, ICollection, IEnumerable {
// Public Instance Properties
   public int Count{get; }
// implements ICollection
   public bool IsReadOnly{get; }
// implements IList
   public object this{set; get; }
// implements IList
// Public Instance Methods
   public bool Contains(object item);  // implements IList
   public void CopyTo(Array dest, int index);  // implements ICollection
   public IEnumerator GetEnumerator();  // implements IEnumerable
   public int IndexOf(object item);  // implements IList
}