System.Net.Configuration.BypassElementCollection.this C# (CSharp) Method

        public BypassElement this[int index]
        {
            get
            {
                return (BypassElement)BaseGet(index);
            }
            set
            {
                if (BaseGet(index) != null)
                {
                    BaseRemoveAt(index);
                }
                BaseAdd(index,value);
            }
        }