通用Windows应用商店应用关闭时如何执行代码？

Question

我正在为Windows 10商店应用开发应用程序,但我似乎无法找到/学习如何检查用户是否按下红色关闭按钮(在右上角)或按Alt+ F4.基本上我想要的是这样的:

private void app_Close(object sender, CloseEventArgs e)
{
     //saves some data in the app :D
}

Answer 1

.:编辑:.

如果你有一个没有MainWindow对象的通用应用程序,你可能想要进入"暂停"事件:

appObject.Suspending += (s, a) =>
        {
            SaveTheData(); // I really like my data and want it for later too
        };

要么

public App()
    {
    /*
        stuff
     */
    Suspending += (s, a) =>
        {
            SaveTheData(); // I really like my data and want it for later too
        };
    }

.: 原版的 :.

在MainWindow"Closing"事件中添加处理程序以保存数据."结束"完成后,"关闭"应正常启动.

theMainWindowObject.Closing += (s,a) =>
    {
        SaveTheData(); // It's precious!
    };

我在一个较小的应用程序中有类似的东西,在MainWindow的构造函数中,我把上面的代码段替换为"theMainWindowObject"代替"this",以便它引用自己

所以我有:

public MainWindow()
    {
    // Note: "this." isn't necessary here but it helps me with mental accounting
    this.Closing += (s, a) =>
        {
            Save();
        };
    }

如果您只是保存一个或两个属性并且没有任何疯狂的逻辑,那么您可以将它放在处理程序中:

public MainWindow()
    {
    Closing += (s, a) =>
        {
            Properties.Settings.Default.SettingsPopupX = mySettingsPopupObject.GetX();
            Properties.Settings.Default.SettingsPopupY = mySettingsPopupObject.GetY();
            Properties.Settings.Default.Save();
        };
    }