public static void Clear()
        {
            Cache objCache;
            HttpContext current = HttpContext.Current;
            if (current != null)
            {
                objCache = current.Cache;
            }
            else
            {
                objCache = HttpRuntime.Cache;
            }

            IDictionaryEnumerator enumerator = objCache.GetEnumerator();
            while (enumerator.MoveNext())
            {
                objCache.Remove(enumerator.Key.ToString());
            }
        }