protected void Page_Load(object sender, EventArgs e) { DependencyDemo demo = new DependencyDemo(); //if (!Page.IsPostBack) //{ // Cache.Insert("key1", "cache item 1", demo.GetCacheDependencyInstance(HttpContext.Current), DateTime.Now.AddSeconds(30), TimeSpan.Zero); //} //Label1.Text = Cache["key1"].ToString(); Cache["key1"] = "Cache Item 1"; Cache.Insert("key2", "Cache Item 2", demo.GetCacheDependencyInstance(HttpContext.Current), DateTime.Now.AddSeconds(30), TimeSpan.Zero); Cache.Remove("key1"); Label1.Text = Cache["key2"].ToString(); }