MessageDialog关闭弹出窗口

Question

在我的弹出窗口窗口（包含游戏选项控件）我有“重置HighScores”按钮。按钮消防MessageDialog与TextBlock“你确定......”和两个按钮“是”和“否”。但是，当MessageDialog打开时，Popup关闭。你知道如何让弹出窗口仍然活着吗？

Answer 1

将您的Popup的IsLightDismissEnabled属性改为false即可实现。

popup.IsLightDismissEnabled = false; 

Answer 2

我能够使用Action委托作为当MessageDialog关闭回调来解决这个问题。

关键是要调用await后的动作MessageDialog的ShowAsync在async函数中。

另一个关键是关闭并打开您的弹出窗口，以获得IsLightDismissEnabled实际占据。

XAML：

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

视图模型：

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(); 
}