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 Button1 As System.Windows.Forms.Button
    Friend WithEvents ProgressBar1 As System.Windows.Forms.ProgressBar
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Button1 = New System.Windows.Forms.Button
        Me.ProgressBar1 = New System.Windows.Forms.ProgressBar
        Me.SuspendLayout()
        '
        'Button1
        '
        Me.Button1.Anchor = CType(((System.Windows.Forms.AnchorStyles.Top Or _
          System.Windows.Forms.AnchorStyles.Left) _
                    Or System.Windows.Forms.AnchorStyles.Right), _
                    System.Windows.Forms.AnchorStyles)
        Me.Button1.Location = New System.Drawing.Point(32, 16)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(232, 88)
        Me.Button1.TabIndex = 0
        Me.Button1.Text = "Click me once, click me twice, click me ten times..."
        '
        'ProgressBar1
        '
        Me.ProgressBar1.Anchor = CType((( _
          System.Windows.Forms.AnchorStyles.Bottom Or _
          System.Windows.Forms.AnchorStyles.Left) _
                    Or System.Windows.Forms.AnchorStyles.Right), _
                    System.Windows.Forms.AnchorStyles)
        Me.ProgressBar1.Location = New System.Drawing.Point(32, 120)
        Me.ProgressBar1.Maximum = 10
        Me.ProgressBar1.Name = "ProgressBar1"
        Me.ProgressBar1.Size = New System.Drawing.Size(232, 32)
        Me.ProgressBar1.TabIndex = 1
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 181)
        Me.Controls.Add(Me.ProgressBar1)
        Me.Controls.Add(Me.Button1)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)
 
    End Sub
 
#End Region
 
    Dim myConnections As Class4
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles Button1.Click
        myConnections.DoProgress()
    End Sub
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles MyBase.Load
        myConnections = New Class4(Me.ProgressBar1)
    End Sub
End Class
 
Public Class Class4
    Private _pb As ProgressBar
 
    Public Sub New(ByVal pb As ProgressBar)
        _pb = pb
    End Sub
 
    Public Function DoProgress()
        _pb.Value += 1
        If _pb.Value = _pb.Maximum Then
            MsgBox("Congratulations, you reached the limit")
            _pb.Value = _pb.Minimum
        End If
    End Function
End Class