ASP.NET MVC controller action with Interceptor pattern

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Collections;

namespace MvcCallInterceptors.Interceptors
{
    /// <summary>
    /// Read only record cound dictionary, can not add or remove
    /// </summary>
    /// <typeparam name="TKey"></typeparam>
    /// <typeparam name="TValue"></typeparam>
    public class InterceptorParasDictionary<TKey, TValue> : IEnumerable<KeyValuePair<TKey, TValue>>, IEnumerable
    {
        private IDictionary<TKey, TValue> _dictionary;

        public InterceptorParasDictionary(IDictionary<TKey, TValue> dictionary)
        {
            _dictionary = dictionary;
        }

        public bool ContainsKey(TKey key)
        {
            return _dictionary.ContainsKey(key);
        }

        public ICollection<TKey> Keys
        {
            get { return _dictionary.Keys; }
        }

        public bool TryGetValue(TKey key, out TValue value)
        {
            return _dictionary.TryGetValue(key, out value);
        }

        public ICollection<TValue> Values
        {
            get { return _dictionary.Values; }
        }

        public TValue this[TKey key]
        {
            get
            {
                return _dictionary[key];
            }
            set
            {
                _dictionary[key] = value;
            }
        }

        public bool Contains(KeyValuePair<TKey, TValue> item)
        {
            return _dictionary.Contains(item);
        }

        public void CopyTo(KeyValuePair<TKey, TValue>[] array, int arrayIndex)
        {
            _dictionary.CopyTo(array, arrayIndex);
        }

        public int Count
        {
            get { return _dictionary.Count; }
        }


        public IEnumerator<KeyValuePair<TKey, TValue>> GetEnumerator()
        {
            return _dictionary.GetEnumerator();
        }

        System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
        {
            return (_dictionary as System.Collections.IEnumerable).GetEnumerator();
        }


    }
}