/// <summary> /// 获取当前应用程序指定CacheKey的Cache对象值 /// </summary> /// <param name="CacheKey">索引键值</param> /// <returns>返回缓存对象</returns>  public static object GetCache(string CacheKey)
{
    System.Web.Caching.Cache objCache = HttpRuntime.Cache; return objCache[CacheKey];
} /// <summary> /// 设置当前应用程序指定CacheKey的Cache对象值 /// </summary> /// <param name="CacheKey">索引键值</param> /// <param name="objObject">缓存对象</param> public static void SetCache(string CacheKey, object objObject)
{
    System.Web.Caching.Cache objCache = HttpRuntime.Cache;
    objCache.Insert(CacheKey, objObject);
} /// <summary> /// 设置当前应用程序指定CacheKey的Cache对象值 /// </summary> /// <param name="CacheKey">索引键值</param> /// <param name="objObject">缓存对象</param> /// <param name="absoluteExpiration">绝对过期时间</param> /// <param name="slidingExpiration">最后一次访问所插入对象时与该对象过期时之间的时间间隔</param> 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);
} protected void Page_Load(object sender, EventArgs e)
{ string CacheKey = "cachetest"; object objModel = GetCache(CacheKey);//从缓存中获取  if (objModel == null)//缓存里没有  {
        objModel = DateTime.Now;//把当前时间进行缓存  if (objModel != null)
        { int CacheTime = 30;//缓存时间30秒  SetCache(CacheKey, objModel, DateTime.Now.AddSeconds(CacheTime), TimeSpan.Zero);//写入缓存  }
    }
    Label1.Text = objModel.ToString();
}