如何在页面中处理WPF Mainwindow中更改的连接状态？ [英] How to handle connection status changed in WPF Mainwindow from page?

问题描述

在我的WPF应用程序中，我在主窗口和框架（导航框架）中有一个用户控件，我的第一页是菜单页面，我将从菜单页面导航到其他页面使用导航服务，这是我的问题。我将在主窗口中连接到硬件设备并在主页面中更新用户控件（显示设备的状态是否已连接），我将使用来自H / W设备提供程序dll的事件处理程序，如果连接状态已更改，现在可以说我是否在应用程序的某个页面中并且连接丢失了。如何更新主窗口的控制状态，我无法在所有页面中实现事件处理程序，我也尝试使用MVVM。



谢谢。

Prabhakaran

Hi,
In my WPF application I am having a user control in main window and a Frame(Navigation frame) and my first page is menu page and I will navigate from menu page to other page using navigation service and here comes my question. I will be connecting to a hardware device in main window and updating the usercontrol(which shows the status of the device as connected or not) in main page and I will be using a event handler from H/W device provider dll which triggers if the connection status changed and now lets say if I am in some of the page in app and the connection got lost. How can I update the main window the control status and I can''t implement the eventhandler in all the pages and I also trying with MVVM.

Thanks.
Prabhakaran

推荐答案

您可以声明一个公共静态属性来存储连接状态。您需要处理每种形式的连接更改。一旦发生连接更改，请从该表单更改Main表单（MainWindow.MyConnection）的静态变量。从此属性的set方法（MyConnection）中拍摄通知程序。

You can declare a public static property to store the connection status. You need to handle connection change in every form. Once connection changed occurred, change the static variable of Main form ( MainWindow.MyConnection) from that form. Shoot the notifier from set method of this property ( MyConnection).

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