windows-phone-8.1 - 如何防止在 Windows phone 8.1 中按下 Home 键时关闭 ContentDialog ..？

Question

private IAsyncOperation<ContentDialogResult> _Task = null;
private ContentDialog _message = null;            


        _message = new ContentDialog()
        {
            Content = "Hello",
            PrimaryButtonText = "EXIT",
            IsPrimaryButtonEnabled = true,
        };

        _message.PrimaryButtonClick += message_PrimaryButtonClick;
        _Task = _message.ShowAsync();

在这里，我为内容对话框创建了一个任务，以便我可以从代码中显式关闭 ContenDialog。

 How can I prevent dialog from closing when Home key is pressed and relaunched 

Answer 1

要防止对话框关闭，请处理其Closing事件并在其ContentDialogClosingEventArgs参数中将Cancel设置为 true 。

初始化对话框时：

myContentDialog.Closing += ContentDialog_Closing; 

事件处理程序：

void ContentDialog_Closing(ContentDialog sender, ContentDialogClosingEventArgs args)
{
    if (doNotClose)
    {
        args.Cancel = true;
    }
}