AuthorizationRuleCollection.cs

using System.Collections;

namespace System.Security.AccessControl
{
    public sealed class AuthorizationRuleCollection : ReadOnlyCollectionBase
    {
        public AuthorizationRule this[int index]
        {
            get
            {
                return base.InnerList[index] as AuthorizationRule;
            }
        }

        public void AddRule(AuthorizationRule rule)
        {
            base.InnerList.Add(rule);
        }

        public void CopyTo(AuthorizationRule[] rules, int index)
        {
            ((ICollection)this).CopyTo((Array)rules, index);
        }
    }
}