几点钟了？

Question

好吧，我为（美食时报）设计了项目，好吗？ 我有五次吃饭

（早晨，中午，日落，夜晚，午夜）< / p>

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• 早晨：03:20 AM
• 中午：下午12:05
• 日落：下午03:46
• 晚上：07：33 PM
• 午夜：晚上08:28

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现在我需要放置计时器进行检查 它将当前时间与数组时间匹配 如果他找到阵列的时间到PC的当前时间，则显示一条消息

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我实际上是在努力并编写了代码

    Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
    Dim TimesArray() As String = {"03:20 AM", "12:05 PM", "03:46 PM", "07:33 PM", "08:28 PM"}
    Dim NamesArray() As String = {"Morning", "Midday", "Sunset", "Night", "Midnight"}
    Dim time = DateTime.Now.TimeOfDay
    Dim q = TimesArray.Select(Function(t, i) New With {.Time = DateTime.Parse(t).TimeOfDay, .I = i}).Select(Function(d) New With {d.Time, .Diff = If(d.Time >= time, d.Time - time, New TimeSpan(24, 0, 0) + d.Time - time), d.I})
    Dim m = q.Min(Function(d) d.Diff)
    Dim r = q.First(Function(d) d.Diff = m)
    MsgBox("Food" & " " & NamesArray(r.I) & " " & "After" & " " & r.Diff.Hours & " " & "Hour" & " " & "and" & " " & r.Diff.Minutes & " " & "Minutes.")
End Sub

和它可以100％工作，但是由于选择功能<，在 .Net Fremwork 3.5 中需要 System.Linq.dll 。 / strong> 这就是为什么我想要一些不需要此功能的东西（选择） 并且不需要 .Net fremwork 3.5

中的 System.Linq.dll

Answer 1

这应该满足您的需求。在每个计时器滴答声中，该子项都会遍历您的数组，并对照该数组检查当前时间，并且时差小于0小时0分钟，将显示消息框。

Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
    Dim TimesArray() As String = {"03:20 AM", "12:05 PM", "03:46 PM", "07:33 PM", "08:28 PM"}
    Dim NamesArray() As String = {"Morning", "Midday", "Sunset", "Night", "Midnight"}

    For i As Integer = 0 To TimesArray.Count - 1
        Dim tempDateTime As Date = Date.Parse(TimesArray(i))
        Dim tempTimeDiff As TimeSpan = tempDateTime.Subtract(DateTime.Now)
        If tempTimeDiff.Hours = 0 And tempTimeDiff.Minutes = 0 Then
            MessageBox.Show("Food " & NamesArray(i) & " After " & tempDateTime.Hour & " and " & tempDateTime.Minute & " Minutes.")
        End If
    Next
End Sub