我是UWP工作的新手，通常我们更多地使用c＃MVC4项目。
i am new to the UWP work, normally we work more with c# MVC4 project.
我们有一个小项目需要在Pi3板上运行。该项目有3页，登陆页面，ScreenSaver页面和配置页面。就像我需要3页和一个小菜单一样，我找到了一个使用appShell和左菜单的演示，点击菜单项我们导航到另一个页面。
We have a small project that need to be running on a Pi3 board. The project have 3 pages, Landing Page, ScreenSaver Page and Config Page. Like I need 3 page and a small menu, I found a demo that uses appShell and a left menu when clicking on menu items we navigate to another page.
在屏幕上保护页面，我们显示小时和一些天气信息，当用户点击屏幕时，页面导航到"登陆页面"。屏幕保护程序页面有一个DispatchTimer，可以通过webserivce 调用更新时间和每个5分钟的更新天气信息。当我需要返回LandingPage时，我有一个Close函数，如：
In the Screen saver page, we display hour and some weather info and when a user tap the screen, the page navigate to the "landingPage". The Screen Saver page has a DispatchTimer that update time and each 5 min update weather info with a webserivce call. When I need to return to the LandingPage I have a Close function like:
public void Close() { if (_timer != null) { _timer.Stop(); _timer = null; } AppShell shell = Window.Current.Content as AppShell; shell.AppFrame.BackStack.Clear(); shell.AppFrame.Navigate(typeof(LandingPage), _keyPressed); }但导航到登陆页面后，我仍然在_timer.tick函数中遇到断点...为什么？
But after navigating to landing page, I still got a breakpoint hit in the _timer.tick function... Why?
有任何建议吗？
Pierre
推荐答案
嗨皮埃尔，
你陈述：
我找到了一个演示，当点击我们导航到另一个页面的菜单项时，它会使用appShell和左侧菜单。
I found a demo that uses appShell and a left menu when clicking on menu items we navigate to another page.
但未提供您正在使用的样本的链接。物联网核心没有外壳，所以请您提供更多有关您正在尝试的内容的详细信息？
but did not provide a link to the sample you are using. IoT Core does not have a shell so can you please provide more details on what you are trying?
此致，
IoTGirl
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