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>

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

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

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

几点钟了？

1 个答案: