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/// <summary>

/// 獲取當前應(yīng)用程序指定CacheKey的Cache對象值

/// </summary>

/// <param name="CacheKey">索引鍵值</param>

/// <returns>返回緩存對象</returns>

public static object GetCache(string CacheKey)

{

    System.Web.Caching.Cache objCache = HttpRuntime.Cache;

    return objCache[CacheKey];

}

/// <summary>

/// 設(shè)置以緩存依賴的方式緩存數(shù)據(jù)

/// </summary>

/// <param name="CacheKey">索引鍵值</param>

/// <param name="objObject">緩存對象</param>

/// <param name="cacheDepen">依賴對象</param>

public static void SetCache(string CacheKey, object objObject, System.Web.Caching.CacheDependency dep)

{

    System.Web.Caching.Cache objCache = HttpRuntime.Cache;

    objCache.Insert(

        CacheKey,

        objObject,

        dep,

        System.Web.Caching.Cache.NoAbsoluteExpiration, //從不過期

        System.Web.Caching.Cache.NoSlidingExpiration, //禁用可調(diào)過期

        System.Web.Caching.CacheItemPriority.Default,

        null);

}

protected void Page_Load(object sender, EventArgs e)

{

    string CacheKey = "cachetest";

    object objModel = GetCache(CacheKey);//從緩存中獲取

    if (objModel == null) //緩存里沒有

    {

        objModel = DateTime.Now;//把當前時間進行緩存

        if (objModel != null)

        {

            //依賴 C:\\test.txt 文件的變化來更新緩存

            System.Web.Caching.CacheDependency dep = new System.Web.Caching.CacheDependency("C:\\test.txt");

            SetCache(CacheKey, objModel, dep);//寫入緩存

        }

    }

    Label1.Text = objModel.ToString();

}