这就是所谓的「网页局部更新(Partial-page Update)。范例应用程式也使用 UpdateProgress 控制项，在处理网页局部更新的同时显示状态讯息。
基于12个网页-相关网页
The default action exiting the catch clause is the same as for a normal exit, for example, to post the current page back to the browser for Full Update or Partial Update.
退出catch子句的默认操作与正常退出操作一样，例如将当前页面传递回浏览器以便进行Full Update或Partial Update。
The label is nested within the content template and the partial update can be triggered by all controls on the page that post back.
标签是嵌套在内容模板和部分更新可以通过网页上的所有控件引发的回发。
Finally, after getting around the way described below, we were able to achieve partial update of the parent page only when required.
最后，在规避下述方式，我们能够实现父页面部分更新仅当需要。
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