C＃UWP为什么我不能添加第二个事件处理程序？

您还可以通过XAML添加事件处理程序：

<Page
    x:Class="Test.MainPage">

    <Canvas x:Name="MainCanvas" Tapped="MainCanvas_Tapped" RightTapped="MainCanvas_RightTapped"/>
</Page>

然后确保您MainPage.cs包含Canvas_Tapped和Canvas_RightTapped事件处理程序，如下所示：

public sealed partial class MainPage : Page
{
    public MainPage()
    {
        this.InitializeComponent();
    }

    private void MainCanvas_Tapped(object sender, TappedRoutedEventArgs e)
    {

    }

    private void MainCanvas_RightTapped(object sender, RightTappedRoutedEventArgs e)
    {

    }
}

如果您不想输入XAML，也可以Canvas在初始化之后将事件处理程序分配给。在这种情况下，您需要更改MainPage构造函数：

public MainPage()
{
    this.InitializeComponent();
    MainCanvas.Tapped += MainCanvas_Tapped;
    MainCanvas.RightTapped += MainCanvas_RightTapped;
}