In other words, by calling TrackRefreshState in a postback event handler, you tell the system that you want to track that operation (and only that) for page refreshes.

• 换句话说,通过在回发事件处理程序中调用TrackRefreshState,使得系统知道您要跟踪该操作(而且只跟踪该操作),以确定是否为页面刷新。