Windows phone 8.1 在Windows phone 8.1中按home键时，如何防止ContentDialog关闭。。？

要防止对话框关闭，请处理其事件并在其参数中设置为true

初始化对话框时：

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

事件处理程序：

myContentDialog.Closing += ContentDialog_Closing; 

myContentDialog.Closing += ContentDialog_Closing; 

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