C# 如何在c中居中显示Metro风格应用程序中的弹出窗口#

有没有办法在Windows 8中显示弹出窗口

将

垂直对齐

和

水平对齐

设置为“中心”，将

垂直偏移

和

水平偏移

设置为0，将导致显示弹出窗口，左上角位于屏幕中心

有什么办法可以做得很好吗

为了使这个问题更加困难，这个弹出窗口在快照视图中有不同的大小，其中也应该居中

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有什么想法吗？

希望这有帮助，把弹出窗口放在画布上，然后操纵画布怎么样

XAML

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试着玩得开心…

我把它放在我的Xaml主网格的末尾，排在其他所有内容之后，所以它肯定会排在前面

<Canvas x:Name="pCanvas" HorizontalAlignment="Center" VerticalAlignment="Center">
    <StackPanel x:Name="pStackPanel">

        <TextBlock x:Name="pText" Text="Enter Name of Playlist:" Margin="25,12" Width="300" />

        <TextBox x:Name="pInputBox" Margin="25,12" Width="300" />

        <Button x:Name="pButton" Content="OK" Height="30" Width="100" Click="pButton_Clicked" Margin="6,12" />

    </StackPanel>
</Canvas>

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我还将以下代码添加到我的xaml.cs（代码隐藏）文件中：

（参见我之前发布的xaml）

然后，我用下面的myPopup（）函数连接任何测试按钮的点击事件

我还没有完全掌握Stackpanel的窍门来集中信息，等等，但我已经做到了

    async void messageBox(String msg)
    {
        MessageDialog dialog = new MessageDialog(msg,"Alert");
        await dialog.ShowAsync();
    }

   private void pButton_Clicked(object sender, RoutedEventArgs e)
    {
        PLPopup.IsOpen = false;

        String str = pInputBox.Text;

        hidePopup();

        messageBox(str);
    }

    void hidePopup()
    {
        pCanvas.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
        pStackPanel.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
        pText.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
        pInputBox.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
        pButton.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
    }

    void showPopup()
    {
        pCanvas.Visibility = Windows.UI.Xaml.Visibility.Visible;
        pStackPanel.Visibility = Windows.UI.Xaml.Visibility.Visible;
        pText.Visibility = Windows.UI.Xaml.Visibility.Visible;
        pInputBox.Visibility = Windows.UI.Xaml.Visibility.Visible;
        pButton.Visibility = Windows.UI.Xaml.Visibility.Visible;
    }

    private void myPopup(object sender, RoutedEventArgs e)
    {
        Brush myBrush = new SolidColorBrush(Windows.UI.Colors.Black);

        topAppBar.IsOpen = false;
        bottomAppBar.IsOpen = false;

        myBrush.Opacity = .5;

        PLPopup = new Popup();
        PLPopup.IsOpen = true;

        //PLPopup.Child = myTextbox;

        pCanvas.Background = myBrush;
        pCanvas.Children.Add(PLPopup);

        pCanvas.Width = this.ActualWidth;
        pCanvas.Height = this.ActualHeight;

        showPopup();
    }

<Canvas x:Name="pCanvas" HorizontalAlignment="Center" VerticalAlignment="Center">
    <StackPanel x:Name="pStackPanel">

        <TextBlock x:Name="pText" Text="Enter Name of Playlist:" Margin="25,12" Width="300" />

        <TextBox x:Name="pInputBox" Margin="25,12" Width="300" />

        <Button x:Name="pButton" Content="OK" Height="30" Width="100" Click="pButton_Clicked" Margin="6,12" />

    </StackPanel>
</Canvas>

    async void messageBox(String msg)
    {
        MessageDialog dialog = new MessageDialog(msg,"Alert");
        await dialog.ShowAsync();
    }

   private void pButton_Clicked(object sender, RoutedEventArgs e)
    {
        PLPopup.IsOpen = false;

        String str = pInputBox.Text;

        hidePopup();

        messageBox(str);
    }

    void hidePopup()
    {
        pCanvas.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
        pStackPanel.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
        pText.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
        pInputBox.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
        pButton.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
    }

    void showPopup()
    {
        pCanvas.Visibility = Windows.UI.Xaml.Visibility.Visible;
        pStackPanel.Visibility = Windows.UI.Xaml.Visibility.Visible;
        pText.Visibility = Windows.UI.Xaml.Visibility.Visible;
        pInputBox.Visibility = Windows.UI.Xaml.Visibility.Visible;
        pButton.Visibility = Windows.UI.Xaml.Visibility.Visible;
    }

    private void myPopup(object sender, RoutedEventArgs e)
    {
        Brush myBrush = new SolidColorBrush(Windows.UI.Colors.Black);

        topAppBar.IsOpen = false;
        bottomAppBar.IsOpen = false;

        myBrush.Opacity = .5;

        PLPopup = new Popup();
        PLPopup.IsOpen = true;

        //PLPopup.Child = myTextbox;

        pCanvas.Background = myBrush;
        pCanvas.Children.Add(PLPopup);

        pCanvas.Width = this.ActualWidth;
        pCanvas.Height = this.ActualHeight;

        showPopup();
    }