protected override void Init() { var grid = new Grid { ColumnDefinitions = { new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) }, new ColumnDefinition{ Width = new GridLength(1, GridUnitType.Star) } }, RowDefinitions = { new RowDefinition { Height = new GridLength(1, GridUnitType.Star) }, new RowDefinition{ Height = new GridLength(1, GridUnitType.Star) } } }; grid.Children.Add(new Button { Text = "Button", HorizontalOptions = LayoutOptions.End, BorderColor = Colors.AliceBlue, BorderWidth = 5, AutomationId = "TestReady" }, 0, 0); grid.Children.Add(new Button { Text = "Button", HorizontalOptions = LayoutOptions.Start, BackgroundColor = Colors.Gray }, 1, 1); grid.Children.Add(new Button { Text = "Button", HorizontalOptions = LayoutOptions.End, }, 0, 1); grid.Children.Add(new Button { Text = "Button", HorizontalOptions = LayoutOptions.Start, }, 1, 0); StackLayout stackLayout = new StackLayout { VerticalOptions = LayoutOptions.Center, Children = { new Label { Text = "The following four buttons should all be the same size. One has a ridiculous border. One has a darker background. One is the default button." }, grid, new Label { Text = "The following three buttons should all have a red border." }, new Button { Text = "BorderWidth = 1, CornerRadius = [default],", HorizontalOptions = LayoutOptions.Center, BorderColor = Colors.Red, BorderWidth = 1, }, new Button { Text = "BorderWidth = 1, CornerRadius = 0", HorizontalOptions = LayoutOptions.Center, BackgroundColor = Colors.Blue, BorderColor = Colors.Red, BorderWidth = 1, CornerRadius = 0, TextColor = Colors.White }, new Button { Text = "BorderWidth = 1, CornerRadius = 1", HorizontalOptions = LayoutOptions.Center, BackgroundColor = Colors.Black, BorderColor = Colors.Red, BorderWidth = 1, CornerRadius = 1, TextColor = Colors.White } }, }; foreach (var element in stackLayout.Descendants()) { //TODO: if (element is Button button) var button = element as Button; if (button != null) { button.On <Android>().SetUseDefaultPadding(true).SetUseDefaultShadow(true); } } Content = stackLayout; }