Private Sub Form1_Deactivate(sender as Object, e as EventArgs) _ 
     Handles Form1.Deactivate

   MessageBox.Show("You are in the Form.Deactivate event.")

End Sub

' 导入命名空间
Imports System.Diagnostics
Imports System.Windows.Forms

public class FormEvents
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class


Public Class Form1
    Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()

        'Add any initialization after the InitializeComponent() call
        Console.WriteLine("New Event Fired")

    End Sub

    'Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        Console.WriteLine("Dispose Method Executed")
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub
    Friend WithEvents btnLoop As System.Windows.Forms.Button
    Friend WithEvents btnRemember As System.Windows.Forms.Button
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Button3 As System.Windows.Forms.Button

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.btnLoop = New System.Windows.Forms.Button()
        Me.btnRemember = New System.Windows.Forms.Button()
        Me.Button1 = New System.Windows.Forms.Button()
        Me.Button2 = New System.Windows.Forms.Button()
        Me.Button3 = New System.Windows.Forms.Button()
        Me.SuspendLayout()
        '
        'btnLoop
        '
        Me.btnLoop.Location = New System.Drawing.Point(24, 56)
        Me.btnLoop.Name = "btnLoop"
        Me.btnLoop.TabIndex = 0
        Me.btnLoop.Text = "Loop"
        '
        'btnRemember
        '
        Me.btnRemember.Location = New System.Drawing.Point(136, 56)
        Me.btnRemember.Name = "btnRemember"
        Me.btnRemember.Size = New System.Drawing.Size(112, 23)
        Me.btnRemember.TabIndex = 1
        Me.btnRemember.Text = "Remember Position"
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(24, 16)
        Me.Button1.Name = "Button1"
        Me.Button1.TabIndex = 2
        Me.Button1.Text = "Button1"
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(128, 16)
        Me.Button2.Name = "Button2"
        Me.Button2.TabIndex = 3
        Me.Button2.Text = "Button2"
        '
        'Button3
        '
        Me.Button3.Location = New System.Drawing.Point(224, 16)
        Me.Button3.Name = "Button3"
        Me.Button3.Size = New System.Drawing.Size(72, 24)
        Me.Button3.TabIndex = 4
        Me.Button3.Text = "Button3"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(320, 134)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Button3, Me.Button2, Me.Button1, Me.btnRemember, Me.btnLoop})
        Me.Name = "Form1"
        Me.Text = "Event-O-Rama"
        Me.ResumeLayout(False)

    End Sub

#End Region
    Dim formsize As System.Drawing.Size
    Dim formlocation As System.Drawing.Point


    Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Console.WriteLine("Load Event Fired")
        formsize = Me.Size
        formlocation = Me.Location
    End Sub

    Private Sub Form1_Activated(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Activated
        Console.WriteLine("Activated Event Fired")
    End Sub

    Private Sub Form1_Closed(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Closed
        Console.WriteLine("Closed Event Fired")
    End Sub

    Private Sub Form1_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
        Console.WriteLine("Closing Event Fired")
        Dim answer As MsgBoxResult
        answer = MsgBox("Do you want to close this window?", MsgBoxStyle.YesNo, "Demonstration of the Closing event")
        If answer = MsgBoxResult.No Then
            e.Cancel = True
        End If
    End Sub

    Private Sub Form1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Click
        Console.WriteLine("Click Event Fired")
    End Sub

    Private Sub Form1_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseMove
        Console.WriteLine("MouseMove Event Fired")
    End Sub

    Private Sub Form1_Resize(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Resize
        Console.WriteLine("Resize Event Fired " & Me.Size.Width.ToString())
    End Sub

    Private Sub Form1_Deactivate(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Deactivate
        Console.WriteLine("Deactivate Event Fired")
    End Sub

    Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint
        Console.WriteLine("Paint Event Fired")
    End Sub

    Private Sub Form1_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Leave
        Console.WriteLine("Leave Event Fired")
    End Sub

    Private Sub Form1_Enter(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Enter
        Console.WriteLine("Enter Event Fired")
    End Sub


    Private Sub btnLoop_Enter(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnLoop.Enter
        Console.WriteLine("btnLoop Enter Event Fired")
        'btnLoop_Leave(sender, e)
    End Sub

    Private Sub btnLoop_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnLoop.Leave
        Console.WriteLine("btnLoop Leave Event Fired")
        'btnLoop_Enter(sender, e)
    End Sub
    Private Sub btnRemember_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnRemember.Click
        Me.Size = formsize
        Me.Location = formlocation
    End Sub

    Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) _
        Handles Button1.Click, Button2.Click, Button3.Click
      MsgBox(sender.Text & " was clicked!")
    End Sub
End Class