ถามวิธีรันสคริป โดยขึ้นอยู่กับ เวลา ครับ ด้วย VB.NET ครับ

Private Sub Timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick
     คำสั่ง
End Sub

Public Class Form1
    Private Timer1 As New Timer
    Private Timer2 As New Timer
    Private Timer3 As New Timer

    Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Label1.Text = "Start."

        AddHandler Timer1.Tick, AddressOf Me.Timer1_Tick
        AddHandler Timer2.Tick, AddressOf Me.Timer2_Tick
        AddHandler Timer3.Tick, AddressOf Me.Timer3_Tick
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Button1.Enabled = False

        Timer1.Interval = 3000
        Timer1.Start()

        Label1.Text = "First."
    End Sub

    Private Sub Timer1_Tick(ByVal sender As Object, ByVal e As EventArgs)
        Timer1.Stop()

        Timer2.Interval = 4000
        Timer2.Start()

        Label1.Text = "Second."
    End Sub

    Private Sub Timer2_Tick(ByVal sender As Object, ByVal e As EventArgs)
        Timer2.Stop()

        Timer3.Interval = 5000
        Timer3.Start()

        Label1.Text = "Third."
    End Sub

    Private Sub Timer3_Tick(ByVal sender As Object, ByVal e As EventArgs)
        Button1.Enabled = True

        Timer3.Stop()

        Label1.Text = "End."
    End Sub

End Class