This property works just like IsPostBack but returns true when a cross-page postback has occurred.

这个属性类似现有的IsPostBack但是只有跨页投递发生时返回true。

youdao

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。

youdao

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。

youdao