how to implement icollection interface in c#

ICollection Interface use for creating the collection of objects.
In below code sample implementing the ICollection imterface to the base class.

public class BasePage : ICollection

    {

         List _arraList;

        static int _currPos = 0;

        public BasePage()

        {

            _arraList = new List();

            _currPos = 0;

        }

        public void Add(T Item)

        { _arraList.Add(Item); }

        #region ICollection Members

        public void CopyTo(Array array, int index)

        {

            if (object.ReferenceEquals(array, null))

            {

                throw new ArgumentNullException(

                    "Null array reference",

                    "array"

                    );

            }

            if (index < 0)

            {

                throw new ArgumentOutOfRangeException(

                    "Index is out of range",

                    "index"

                    );

            }

            if (array.Rank > 1)

            {

                throw new ArgumentException(

                    "Array is multi-dimensional",

                    "array"

                    );

            }

            foreach (object o in this)

            {

                array.SetValue(o, index);

                index++;

            }

        }

        public bool IsSynchronized

        {

            get { return false; }

        }

        public object SyncRoot

        {

            get { return this; }

        }

        #endregion ICollection Members

        public int Count

        {

            get { return _arraList.Count; }

        }

        public IEnumerator GetEnumerator()

        {

            foreach (T item in _arraList)

            {

                yield return item;

            }

        }

    }