Public Sub InitializeMyToolBar()
    ' Create and initialize the ToolBar and ToolBarButton controls.
    Dim toolBar1 As New ToolBar()
    Dim toolBarButton1 As New ToolBarButton()
    Dim toolBarButton2 As New ToolBarButton()
    Dim toolBarButton3 As New ToolBarButton()
    
    ' Set the Text properties of the ToolBarButton controls.
    toolBarButton1.Text = "Open"
    toolBarButton2.Text = "Save"
    toolBarButton3.Text = "Print"
    
    ' Add the ToolBarButton controls to the ToolBar.
    toolBar1.Buttons.Add(toolBarButton1)
    toolBar1.Buttons.Add(toolBarButton2)
    toolBar1.Buttons.Add(toolBarButton3)
    
    ' Add the event-handler delegate.
    AddHandler toolBar1.ButtonClick, AddressOf Me.toolBar1_ButtonClick
    
    ' Add the ToolBar to the Form.
    Controls.Add(toolBar1)
End Sub    

Private Sub toolBar1_ButtonClick(ByVal sender As Object, _
ByVal e As ToolBarButtonClickEventArgs)

    ' Evaluate the Button property to determine which button was clicked.
    Select Case toolBar1.Buttons.IndexOf(e.Button)
        Case 0
            openFileDialog1.ShowDialog()
            ' Insert code to open the file.
        Case 1
            saveFileDialog1.ShowDialog()
            ' Insert code to save the file.
        Case 2
            printDialog1.ShowDialog()
            ' Insert code to print the file.
    End Select
End Sub

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


Module Module1

    Sub Main()
        Application.Run(New Form1)
    End Sub

End Module



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

    End Sub

    'Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    '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.
    Friend WithEvents ToolBar1 As System.Windows.Forms.ToolBar
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.ToolBar1 = New System.Windows.Forms.ToolBar()
        Me.SuspendLayout()
        '
        'ToolBar1
        '
        Me.ToolBar1.DropDownArrows = True
        Me.ToolBar1.Name = "ToolBar1"
        Me.ToolBar1.ShowToolTips = True
        Me.ToolBar1.Size = New System.Drawing.Size(288, 39)
        Me.ToolBar1.TabIndex = 0
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(288, 189)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.ToolBar1})
        Me.Name = "Form1"
        Me.Text = "ToolBarDemo"
        Me.ResumeLayout(False)

    End Sub

#End Region
    Public MondayButton = New ToolBarButton("Monday")
    Public TuesdayButton = New ToolBarButton("Tuesday")
    Public WednesdayButton = New ToolBarButton("Wednesday")
    Public ThursdayButton = New ToolBarButton("Thursday")
    Public FridayButton = New ToolBarButton("Friday")

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        ToolBar1.Buttons.Add(MondayButton)
        ToolBar1.Buttons.Add(TuesdayButton)
        ToolBar1.Buttons.Add(WednesdayButton)
        ToolBar1.Buttons.Add(ThursdayButton)
        ToolBar1.Buttons.Add(FridayButton)
    End Sub

    Private Sub ToolBar1_ButtonClick(ByVal sender As Object, ByVal e As System.Windows.Forms.ToolBarButtonClickEventArgs) Handles ToolBar1.ButtonClick
        Dim ButtonPicked As ToolBarButton = e.Button

        If (ButtonPicked.Equals(MondayButton)) Then
            MessageBox.Show("You picked Monday")
        ElseIf (ButtonPicked.Equals(TuesdayButton)) Then
            MessageBox.Show("You picked Tuesday")
        ElseIf (ButtonPicked.Equals(WednesdayButton)) Then
            MessageBox.Show("You picked Wednesday")
        ElseIf (ButtonPicked.Equals(ThursdayButton)) Then
            MessageBox.Show("You picked Thursday")
        ElseIf (ButtonPicked.Equals(FridayButton)) Then
            MessageBox.Show("You picked Friday")
        End If
    End Sub
End Class