//自定义标题栏

           var view = Windows.UI.ViewManagement.ApplicationView.GetForCurrentView();

            ApplicationViewTitleBar titleBar = view.TitleBar;

			if (titleBar != null) {

				titleBar.ExtendViewIntoTitleBar = true;//隐藏

				titleBar.BackgroundColor = Color.FromArgb(84, 135, 205, 250);

				titleBar.ForegroundColor = Colors.White;

				titleBar.ButtonBackgroundColor = Color.FromArgb(84, 135, 205, 250);

				titleBar.ButtonForegroundColor = Colors.White;

			}

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