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当我尝试创建具有两个子元素的StackPanel并将其分配给Flyout时,为什么弹出控件会崩溃?

[英]Why is my flyout crashing when I try to create a StackPanel with two child elements and assign that to a Flyout?

我尝试在GridView中的网格上右击时调用Callisto Flyout(最终目标是允许用户更改值并将其存储在ApplicationDataContainer中)。 我首先用一个示例创建了一个可以在网上找到的菜单,但是我不想要菜单,因此尝试将其从菜单更改为带有TextBlock和TextBox的StackPanel。 这段代码:

private void ItemView_RightTapped(object sender, RightTappedRoutedEventArgs e)
{
    var flyOut = new Flyout {PlacementTarget = sender as UIElement, Placement = PlacementMode.Mouse};

    var sp = new StackPanel {MinWidth = 240, MinHeight = 80, Orientation = Orientation.Horizontal};

    var tblk = new TextBlock {MinWidth = 60, MinHeight = 72};
    sp.Children.Add(tblk);

    TextBox tb = new TextBox {MinWidth = 120, MinHeight = 72};
    sp.Children.Add(tb);

    flyOut.Content = sp;
    flyOut.IsOpen = true;

    UpdateLayout();        
}

...崩溃并带我到App.gics中的这一行:

if (global::System.Diagnostics.Debugger.IsAttached) global::System.Diagnostics.Debugger.Break();

顺便说一句,我最终可能会将代码从RightTapped事件移到“魅力设置”中的“适当”位置,但是我认为无论哪种情况都需要解决此问题。

更新

我试图通过将弹出按钮从“就地”移动到“ Windows 8设置”面板来走不同的路线:

public ItemsPage()
{
    InitializeComponent();
    SettingsPane.GetForCurrentView().CommandsRequested += OnSettingsPaneCommandRequested;
}

private void ItemView_RightTapped(object sender, RightTappedRoutedEventArgs e)
{
    SettingsPane.Show();
}

private void OnSettingsPaneCommandRequested(SettingsPane sender, SettingsPaneCommandsRequestedEventArgs args)
{
    args.Request.ApplicationCommands.Add(new SettingsCommand("commandSetSection1Name",
                                                            "Change the name of Section 1", SetAndSaveSectionNames));
    args.Request.ApplicationCommands.Add(new SettingsCommand("commandSetSection2Name",
                                                            "Change the name of Section 2", SetAndSaveSectionNames));
    args.Request.ApplicationCommands.Add(new SettingsCommand("commandSetSection3Name",
                                                            "Change the name of Section 3", SetAndSaveSectionNames));
    args.Request.ApplicationCommands.Add(new SettingsCommand("commandSetSection4Name",
                                                            "Change the name of Section 4", SetAndSaveSectionNames));
    args.Request.ApplicationCommands.Add(new SettingsCommand("commandSetSection5Name",
                                                            "Change the name of Section 5", SetAndSaveSectionNames));
    args.Request.ApplicationCommands.Add(new SettingsCommand("commandSetSection6Name",
                                                            "Change the name of Section 6", SetAndSaveSectionNames));
}

private void SetAndSaveSectionNames(IUICommand command)
{
    var flyOut = new Flyout(); // flyOut is a Callisto control

    var sp = new StackPanel {MinWidth = 240, MinHeight = 80, Orientation = Orientation.Horizontal};

    var tblk = new TextBlock {MinWidth = 60, MinHeight = 72};
    sp.Children.Add(tblk);
    TextBox tb = new TextBox {MinWidth = 120, MinHeight = 72};
    sp.Children.Add(tb);
    flyOut.Content = sp;
    flyOut.IsOpen = true;

    UpdateLayout();        
}

但是,发生了相同的事情-通过右键单击GridView中的一个网格(ItemView_RightTapped),然后选择其中一个,可以很好地调用SetAndSaveSectionNames()。

“更改N部分的名称”文本块或“设置”面板上的任何文本块,然后:crasho!

如果一个小伙子想要在“设置”面板中有几十个设置,那将如何工作-似乎没有比我添加的六个更多的空间-它会在某个时候萌发一个ViewBox或ScrollBox或其他东西来容纳它吗?

异常可能是NotImplementedException,因为Callisto代码尚未实现PlacementMode.Mouse选项。 我今天有这个问题。

参见: https : //github.com/timheuer/callisto/blob/master/src/Callisto/Controls/Flyout/Flyout.cs

case PlacementMode.Mouse:
    throw new NotImplementedException("Mouse PlacementMode is not implemented.");

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