Public Sub InstantiateMyNumericUpDown()
    ' Create and initialize a NumericUpDown control.
    numericUpDown1 = New NumericUpDown()
    
    ' Dock the control to the top of the form.
    numericUpDown1.Dock = System.Windows.Forms.DockStyle.Top
    
    ' Set the Minimum, Maximum, and initial Value.
    numericUpDown1.Value = 5
    numericUpDown1.Maximum = 2500
    numericUpDown1.Minimum = - 100
    
    ' Add the NumericUpDown to the Form.
    Controls.Add(numericUpDown1)
End Sub    

' Check box to toggle decimal places to be displayed.
Private Sub checkBox1_Click(sender As Object, e As EventArgs)
    ' If DecimalPlaces is greater than 0, set them to 0 and round the
    ' current Value; otherwise, set DecimalPlaces to 2 and change the
    ' Increment to 0.25. 
    If numericUpDown1.DecimalPlaces > 0 Then
        numericUpDown1.DecimalPlaces = 0
        numericUpDown1.Value = Decimal.Round(numericUpDown1.Value, 0)
    Else
        numericUpDown1.DecimalPlaces = 2
        numericUpDown1.Increment = 0.25D
    End If
End Sub    

' Check box to toggle thousands separators to be displayed.
Private Sub checkBox2_Click(sender As Object, e As EventArgs)
    ' If ThousandsSeparator is true, set it to false;
    ' otherwise, set it to true. 
    If numericUpDown1.ThousandsSeparator Then
        numericUpDown1.ThousandsSeparator = False
    Else
        numericUpDown1.ThousandsSeparator = True
    End If
End Sub    

' Check box to toggle hexadecimal to be displayed.
Private Sub checkBox3_Click(sender As Object, e As EventArgs)
    ' If Hexadecimal is true, set it to false;
    ' otherwise, set it to true. 
    If numericUpDown1.Hexadecimal Then
        numericUpDown1.Hexadecimal = False
    Else
        numericUpDown1.Hexadecimal = True
    End If
End Sub

' 导入命名空间
Imports System.Windows.Forms

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 NumericUpDown1 As System.Windows.Forms.NumericUpDown
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents Button1 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.NumericUpDown1 = New System.Windows.Forms.NumericUpDown()
        Me.Label1 = New System.Windows.Forms.Label()
        Me.Button1 = New System.Windows.Forms.Button()
        CType(Me.NumericUpDown1, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'NumericUpDown1
        '
        Me.NumericUpDown1.Location = New System.Drawing.Point(104, 24)
        Me.NumericUpDown1.Name = "NumericUpDown1"
        Me.NumericUpDown1.TabIndex = 0
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(16, 24)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(72, 23)
        Me.Label1.TabIndex = 1
        Me.Label1.Text = "Value"
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(104, 72)
        Me.Button1.Name = "Button1"
        Me.Button1.TabIndex = 2
        Me.Button1.Text = "Done"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 117)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Button1, Me.Label1, Me.NumericUpDown1})
        Me.Name = "Form1"
        Me.Text = "NumericUpDownDemo"
        CType(Me.NumericUpDown1, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)

    End Sub

#End Region


    Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        MessageBox.Show("Value is " & NumericUpDown1.Value)
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        NumericUpDown1.Increment = 5
        NumericUpDown1.Maximum = 1000
        NumericUpDown1.Value = 500
    End Sub
End Class