| 摘要 |
User interface state (UI) information (such as UI control values) are stored and revived when the user navigates and returns to an application. When an instance of a page is created, the page registers with a tombstone list and indicates which page state information on the page is to be stored and revived when a user navigates away from the application. When the user provides an input indicating navigation away from the application, the application accesses the tombstone list and stores the UI page state information. UI page state information is stored in a page state dictionary data structure that corresponds to the current instance of the page. Then, when the user navigates back to the application, the application accesses the page state dictionary and restores the values of the UI page state information so that the user interface display is in the same state as when the user navigated away from the application.
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