Question

我有一个自定义用户控件（UWP），当UWP App以暂停模式进入 OnSuspending方法（App.cs）时，我需要调用其方法之一，另一种方法是调用位于在MainPage中

有可能实现这一目标吗？

Answer 1

您的控件可以实现自己的OnSuspending处理程序，如下所示：

public MyUserControl()
{
    this.InitializeComponent();
    this.Loaded += MyUserControl_Loaded;
    this.Unloaded += MyUserControl_Unloaded;                
}

private void MyUserControl_Loaded(object sender, RoutedEventArgs e)
{
    Application.Current.Suspending += MyUserControl_Suspending;
}

private void MyUserControl_Unloaded(object sender, RoutedEventArgs e)
{
    Application.Current.Suspending -= MyUserControl_Suspending;
}

private void MyUserControl_Suspending(object sender, SuspendingEventArgs e)
{
    // your control's OnSuspending code here
}

UWP应用暂停时调用用户控件/主页方法

1 个答案: