//File:Window.xaml.cs using System; using System.Collections.Generic; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Shapes; namespace WpfApplication1 { public partial class MainWindow : System.Windows.Window { public MainWindow() { InitializeComponent(); lblInstructions.FontSize = 14; btnPurchaseOptions.Click +=new RoutedEventHandler(btnPurchaseOptions_Click); } private void btnPurchaseOptions_Click(object sender, RoutedEventArgs e) { MessageBox.Show("Button has been clicked"); } } }