[.NET] timer連續執行問題
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VB.Net
各位先進好，
想請教一下為何下列程式碼只會執行最後一個t1=5的情形，
如果我希望先執行10秒，再執行15秒，最後5秒，
這樣該怎麼修改程式呢？
還望各位能給予指導，感謝！
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
t1 = 10
Timer1.Enabled = True
t1 = 15
Timer1.Enabled = True
t1 = 5
Timer1.Enabled = True
End Sub
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Timer1.Tick
TextBox1.Text = "T1:" & t1
If t1 = 0 Then
Timer1.Enabled = False
Else
t1 = t1 - 1
End If
End Sub
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