protected override void OnApplyTemplate()
{
base.OnApplyTemplate();
_contentPresenter = GetTemplateChild("ContentPresenter") as WContentPresenter;
_rootGrid = GetTemplateChild("RootGrid") as Microsoft.UI.Xaml.Controls.Grid;
UpdateBackgroundColor();
UpdateBorderRadius();
}
protected override void OnApplyTemplate()
{
base.OnApplyTemplate();
_presenter = GetTemplateChild("presenter") as Microsoft.UI.Xaml.Controls.ContentPresenter;
_titleViewPresenter = GetTemplateChild("TitleViewPresenter") as FrameworkElement;
_commandBar = GetTemplateChild("CommandBar") as CommandBar;
_titleViewManager = new TitleViewManager(this);
_toolbarPlacementHelper.Initialize(_commandBar, () => ToolbarPlacement, GetTemplateChild);
UpdateToolbarDynamicOverflowEnabled();
TaskCompletionSource <CommandBar> tcs = _commandBarTcs;
tcs?.SetResult(_commandBar);
}