1. C# Events and WPF #W5

3. Horizontal Prototype

4. WPF Designed for rapid user interface design Used for many devices: Windows Phone, Tablets, PCs,

5. Microsoft Virtual Academy http://www.microsoftvirtualacademy.com/ M icrosoft Developer Network https://msdn.microsoft.com/

6. Extensible Application Markup Language (XAML) Separating front-end from back-end Design space Tree-like structure Containers; Canvas, Grid, StackPanel UIElements; Image, Button, Rect

7. Some containers Grid Canvas StackPanel

8. Exercise Create a WPF project Create a button in XAML Now create a button in C#

9. C# code… public MainWindow() { InitializeComponent(); Button button1 = new Button(); button1.Content = "Button"; button1.Click += Button_Click; this.Grid1.Children.Add(button1); } private void Button_Click(object sender, RoutedEventArgs e) { throw new NotImplementedException(); } // and add a Click event hanler.

10. Events – – –

11. – –

12. Events

13. Exercise Add Mouse is Up event to the button you just created Change the content to “clicked”

14. Solution private void MouseIsUp(object sender, MouseButtonEventArgs e) { bt.Content = "Clicked"; }

15. Exercise

16. Solution

17. … private void Button_Click(object sender, RoutedEventArgs e) { greetingOutput.Text = "Hello, " + nameInput.Text + "!"; }

18. Timer

19. C# using System.Windows.Threading; public void DispatcherTimerSample() { InitializeComponent(); DispatcherTimer timer = new DispatcherTimer(); timer.Interval = TimeSpan.FromSeconds(1); timer.Tick += timer_Tick; timer.Start(); } void timer_Tick(object sender, EventArgs e) { lblTime.Content = DateTime.Now.ToLongTimeString(); }

20. XAML