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






Create Window and add window closing event handler

Create Window and add window closing event handler
    
<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

   
    
    
    
  








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