public App() { var lcb = new LegalCheckbox(); // The root page of your application var CheckButton = new Button(); var result = new Label(); CheckButton.Clicked += (sender, e) => { if (lcb.Checked) { result.Text = "Its Checked"; } else { result.Text = "Not Checked"; } }; MainPage = new ContentPage { Content = new StackLayout { VerticalOptions = LayoutOptions.Center, Children = { lcb, CheckButton, result } } }; }