c# CacheManager 緩存管理

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using System.Collections;

namespace Common
{
   public static  class CacheManager
    {

        /// <summary>  
        /// 擷取資料緩存  
        /// </summary>  
        /// <param name="CacheKey">鍵</param>  
        public static object GetCache(string CacheKey)
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            return objCache[CacheKey];
        }

        /// <summary>  
        /// 設定資料緩存  
        /// </summary>  
        public static void SetCache(string CacheKey, object objObject)
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            objCache.Insert(CacheKey, objObject);
        }

        /// <summary>  
        /// 設定資料緩存
        /// CacheKey  
        /// objObject 
        ///  expires  分鐘
        /// </summary>  
        public static void SetCache(string CacheKey, object objObject, int expires)
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            objCache.Insert(CacheKey, objObject, null, DateTime.MaxValue, new TimeSpan(0, expires, 0), System.Web.Caching.CacheItemPriority.NotRemovable, null);
        }

        /// <summary>  
        /// 設定資料緩存  
        /// </summary>  
        public static void SetCache(string CacheKey, object objObject, DateTime absoluteExpiration, TimeSpan slidingExpiration)
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            objCache.Insert(CacheKey, objObject, null, absoluteExpiration, slidingExpiration);
        }

        /// <summary>  
        /// 移除指定資料緩存  
        /// </summary>  
        public static void RemoveCache(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());
            }
        }  
    }
}