代码如下：
------Form1.vb-----------------------------------------------------------------------------------------------------
Public Class Form1
Private Shared myTimer As New System.Windows.Forms.Timer()
Private Shared alarmCounter As Integer = 0'总秒数计数用
Private Shared pbCount As Integer = 0'进度条计数用
Private Shared timeH As Integer = 0'小时计数用
Private Shared timeM As Integer = 0'分钟计数用
Private Shared timeS As Integer = 0'秒计数用
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
' Main()
Me.Timer1.Enabled = True
Me.Timer1.Interval = 1000 '单位是毫秒
Me.Timer1.Start()
' alarmCounter += 1
' myTimer.Enabled = True
End Sub
'每经过1000毫秒就执行一次 Timer1_Tick方法
Private Sub Timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick
timeS += 1 '每一秒加一
If timeS >= 60 Then
timeS = 0
timeM += 1
End If
If timeM >= 60 Then
timeH += 1
timeM = 0
timeS = 0
End If
lblS.Text = timeS
lblM.Text = timeM
lblH.Text = timeH
alarmCounter += 1
pbCount += 1
Me.lblSecand.Text = alarmCounter
If Me.ProgressBar1.Value < 100 Then
Me.ProgressBar1.Value = pbCount
Else
Me.ProgressBar1.Value = 0
pbCount = 1
End If
Me.Text = "计时器: " & alarmCounter & "秒"
End Sub
Private Sub Class1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
lblS.Text = ""
lblM.Text = ""
lblH.Text = ""
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Me.Timer1.Stop()'stop按钮
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
'Reset按钮事件
Me.Timer1.Enabled = False
lblS.Text = ""
lblM.Text = ""
lblH.Text = ""
Me.lblSecand.Text = ""
timeH = 0
timeM = 0
timeS = 0
alarmCounter = 0
Me.Text = "计时器 v1.0"
Me.ProgressBar1.Value = 0
End Sub
End Class