MessageDialog关闭弹出窗口

Question

在我的弹出窗口(包含游戏选项控件)中，我有“重置HighScores”按钮。按钮触发带有MessageDialog的TextBlock“您确定.”还有两个按钮“是”和“不是”。但是，当MessageDialog打开时，弹出窗口就会关闭。你知道怎么弥补弹出式还活着吗？

Answer 1

我能够使用Action委托作为MessageDialog关闭时的回调来解决这个问题。

关键是在await on MessageDialog's ShowAsync之后调用async函数中的Action。

另一个关键是关闭并打开弹出窗口，以使IsLightDismissEnabled真正占上风。

XAML：

<Popup
    IsLightDismissEnabled="{Binding IsLightDismiss, Mode=TwoWay}"
    IsOpen="{Binding IsPopupOpen, Mode=TwoWay}">

ViewModel：

private bool isPopupOpen;
public bool IsPopupOpen
{
    get { return this.isPopupOpen; }
    set { this.SetProperty(ref this.isPopupOpen, value); }
}

private bool isLightDismiss;
public bool IsLightDismiss
{
    get { return this.isLightDismiss; }
    set { this.SetProperty(ref this.isLightDismiss, value); }
}

protected void ShowDialog()
{
    this.IsLightDismiss = false;
    this.IsPopupOpen = false;
    this.IsPopupOpen = true;
    Action showPopup = () => {
        this.IsLightDismiss = true;
        this.IsPopupOpen = false;
        this.IsPopupOpen = true;
    };
    ShowMessageDialog("message", "title", showPopup);
}

private async void ShowMessageDialog(string message, string title, Action callback)
{
    var _messageDialog = new MessageDialog(message, title);
    await _messageDialog.ShowAsync();
    callback();
}

Answer 2

将Popup的IsLightDismissEnabled属性设置为false以实现这一点。

popup.IsLightDismissEnabled = false;