如何在vb.net计时器中找到变量的第一个值？

Question

我有这个问题：

我有一个vb.net类（visual studio 2010）：

....
Private nowTime As String
....
Protected Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick

  nowTime = My.Computer.Clock.LocalTime.ToLongTimeString

....

End Sub

在任何时间间隔内启用Timer后，如何获取“nowTime”字符串变量的第一个值？

提前致谢！

Answer 1

这样的事情应该有效。

....
Private nowTime As String
Private firstTime As String
Private isFirstTriggered As Boolean = False
....
Protected Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick

  If Not isFirstTriggered Then
    firstTime = My.Computer.Clock.LocalTime.ToLongTimeString
    isFirstTriggered = True
  End If
  nowTime = My.Computer.Clock.LocalTime.ToLongTimeString

....

End Sub