c# Cache 使用實例

        /// <summary>
        /// 創建緩存項的文件
        /// </summary>
        /// <param name="key">緩存Key</param>
        /// <param name="obj">object對象</param>
        public static void Insert(string key, object obj)
        {
            //創建緩存 
            HttpContext.Current.Cache.Insert(key, obj);
        }
        /// <summary>
        /// 移除緩存項的文件
        /// </summary>
        /// <param name="key">緩存Key</param>
        public static void Remove(string key)
        {
            //創建緩存
            HttpContext.Current.Cache.Remove(key);
        }
        /// <summary>
        /// 創建緩存項的文件依賴
        /// </summary>
        /// <param name="key">緩存Key</param>
        /// <param name="obj">object對象</param>
        /// <param name="fileName">文件絕對路徑</param>
        public static void Insert(string key, object obj, string fileName)
        {
            //創建緩存依賴項
            CacheDependency dep = new CacheDependency(fileName);
            //創建緩存
            HttpContext.Current.Cache.Insert(key, obj, dep);
        }

        /// <summary>
        /// 創建緩存項過期
        /// </summary>
        /// <param name="key">緩存Key</param>
        /// <param name="obj">object對象</param>
        /// <param name="expires">過期時間(分鍾)</param>
        public static void Insert(string key, object obj, int expires)
        {
            HttpContext.Current.Cache.Insert(key, obj, null, Cache.NoAbsoluteExpiration, new TimeSpan(0, expires, 0));
        }

        /// <summary>
        /// 獲取緩存對象
        /// </summary>
        /// <param name="key">緩存Key</param>
        /// <returns>object對象</returns>
        public static object Get(string key)
        {
            if (string.IsNullOrEmpty(key))
            {
                return null;
            }
            try
            {
                return HttpContext.Current.Cache.Get(key);
            }
            catch
            {
                return null;
            }
        }

        /// <summary>
        /// 獲取緩存對象
        /// </summary>
        /// <typeparam name="T">T對象</typeparam>
        /// <param name="key">緩存Key</param>
        /// <returns></returns>
        public static T Get<T>(string key)
        {
            object obj = Get(key);
            return obj == null ? default(T) : (T)obj;
        }

      

        /// <summary>
        /// 獲取數據緩存
        /// </summary>
        /// <param name="CacheKey">鍵</param>
        public static object GetCache(string CacheKey)
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            return objCache[CacheKey];
        }

        /// <summary>
        /// 設置數據緩存
        /// </summary>
        public static void SetCache(string CacheKey, object objObject)
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            objCache.Insert(CacheKey, objObject);
        }

        /// <summary>
        /// 移除指定數據緩存
        /// </summary>
        public static void RemoveAllCache(string CacheKey)
        {
            System.Web.Caching.Cache _cache = HttpRuntime.Cache;
            _cache.Remove(CacheKey);
        }

        /// <summary>
        /// 移除全部緩存
        /// </summary>
        public static void RemoveAllCache()
        {
            System.Web.Caching.Cache _cache = HttpRuntime.Cache;
            IDictionaryEnumerator CacheEnum = _cache.GetEnumerator();
            while (CacheEnum.MoveNext())
            {
                _cache.Remove(CacheEnum.Key.ToString());
            }
        }