Create Window and add window closing event handler : Window Event « Windows Presentation Foundation « VB.Net Tutorial






<Window x:Class="WpfApplication1.Window1"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:system="clr-namespace:System.Windows;assembly=PresentationFramework"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  Title="Main Window" Height="310" Width="280" Loaded="Window1_Loaded">


</Window>
//File:Window.xaml.vb
Imports System
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Documents
Imports System.Windows.Media

Namespace WpfApplication1
  Public Partial Class Window1
    Inherits Window
    Public Sub New()
      InitializeComponent()
    End Sub
    Private Sub Window1_Loaded(sender As Object, e As RoutedEventArgs)
      Dim backgrounds As Brush() = New Brush(4) {Brushes.Red, Brushes.Blue, Brushes.Green, Brushes.Yellow, Brushes.HotPink}
      For i As Integer = 1 To 5
        Dim window As New Window()

        SetupWindow(window, "Window " & i, backgrounds(i - 1))
        window.Show()
      Next

    End Sub
    Private Sub SetupWindow(window As Window, title As String, background As Brush)
      AddHandler window.Closing, New CancelEventHandler(AddressOf Window_Closing)

      AddHandler window.Closed, New EventHandler(AddressOf Window_Closed)

      window.Title = title
      window.Width = 100.0
      window.Height = 100.0

      Dim viewBox As New Viewbox()
      Dim textBlock As New TextBlock()

      window.Background = background
      viewBox.Child = textBlock
      textBlock.Text = window.Title
      window.Content = viewBox
    End Sub
    Private Sub Window_Closed(sender As Object, e As EventArgs)
      Console.WriteLine("closed")
    End Sub

    Private Sub Window_Closing(sender As Object, e As CancelEventArgs)
      Dim w As Window = TryCast(sender, Window)

      If w Is Nothing Then
        Return
      End If
    End Sub

  End Class
End Namespace
WPF Create Window And Add Window Closing Event Handler








16.58.Window Event
16.58.1.Window.CommandBindingsWindow.CommandBindings
16.58.2.Window.DragMoveWindow.DragMove
16.58.3.Listen to Window loaded eventListen to Window loaded event
16.58.4.Create Window and add window closing event handlerCreate Window and add window closing event handler
16.58.5.Activate window, close window, bring window to frontActivate window, close window, bring window to front
16.58.6.Window Preview Key EventsWindow Preview Key Events
16.58.7.Window On Mouse move eventWindow On Mouse move event
16.58.8.Window On Mouse up eventWindow On Mouse up event
16.58.9.Window mouse down eventWindow mouse down event
16.58.10.Window Preview mouse down eventWindow Preview mouse down event
16.58.11.Window mouse up eventWindow mouse up event
16.58.12.Close a window with Escape key pressedClose a window with Escape key pressed
16.58.13.Window Closing and Closed eventWindow Closing and Closed event