You want to populate the control only when the page is initially requested, so you use the page's IsPostBack property to ensure that it's loaded only once, not when the page is refreshed or reloaded.
要想仅当页面最初被请求时填充控件，需要使用页面的 IsPostBack属性，以确保页面只加载一次，而不是页面刷新或者重载。
When you refresh in this way, all staff query results that you specify are refreshed, not only the expired ones.
当用这种方法进行刷新时，将刷新您所指定的所有人员查询结果，而不仅仅是那些过期的结果。
When refreshing this way, all specified staff query results are refreshed, not only the expired ones.
以此方法刷新时，将刷新所有指定的人员查询结果，而不只是过期的结果。
You would feel actually refreshed and rejuvenated after getting cleaned-up, not only physically but also psychologically.
洗干净后，你就会觉得真的精神振作、充满活力，不仅身体上而且心理上亦是如此。
You would feel actually refreshed and rejuvenated after getting cleaned-up, not only physically but also psychologically.
洗干净后，你就会觉得真的精神振作、充满活力，不仅身体上而且心理上亦是如此。
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