sdk/samples/WPFSamples/WindowCloseHideSample/csharp/mainwindow.xaml.cs

   1 using System.ComponentModel; // CancelEventArgs
   2 using System.Windows; // Window, RoutedEventArgs
   3
   4 namespace WindowCloseHideSample
   5 {
   6     public partial class MainWindow : Window
   7     {
   8         // To hide/show a window, rather than reinstantiate a window
   9         // each time it needs to be opened, we need to retain the instance
  10         // in a class-scoped variable
  11         private ChildWindow childWindow;
  12
  13         public MainWindow()
  14         {
  15             InitializeComponent();
  16         }
  17
  18         private void showChildWindowButton_Click(object sender, RoutedEventArgs e)
  19         {
  20             // Create the window if it's not already created
  21             if (this.childWindow == null) this.childWindow = new ChildWindow();
  22
  23             // Show the window
  24             this.childWindow.Show();
  25         }
  26
  27         private void Window_Closing(object sender, CancelEventArgs e)
  28         {
  29             // Close the child window only when this window closes
  30             this.childWindow.Close();
  31         }
  32     }
  33 }