设置页面不缓存

 #region "设置不缓存网页"
    /// <summary>
    /// 设置不缓存网页

    /// </summary>
    public static void SetNoWebCache()
    {
        HttpContext.Current.Response.Cache.SetNoServerCaching();
        HttpContext.Current.Response.Cache.SetCacheability(System.Web.HttpCacheability.NoCache);
        HttpContext.Current.Response.Cache.SetNoStore();
        HttpContext.Current.Response.Cache.SetExpires(new DateTime(1900, 01, 01, 00, 00, 00, 00));
    }
    #endregion 

模式对话框缓存清楚办法，放在page_load里面