Vb.net-日期：如何获取一天的开始时间和结束时间

如何在vb.net中实现这一点：获取一天的开始时间和结束时间

例如

Start DateTime: 05-Nov-2013 00:00:00
End DateTime: 05-Nov-2013 23:59:99

Regars

您可以向日期值中添加如下内容：

Dim dateValue As DateTime = DateTime.Now

Dim startTime As DateTime = dateValue.Date + New TimeSpan(0, 0, 0) 'timespan addition not actually needed here
Dim endTime As DateTime = dateValue.Date + New TimeSpan(23, 59, 59)

我的0.02美元

    Dim someDate As DateTime = DateTime.Now
    Dim StartDateTime As DateTime = someDate.Date
    'last measurable instant for a given date
    Dim EndDateTime As DateTime = someDate.Date.Add(New TimeSpan(TimeSpan.TicksPerDay - 1))

---

注意，你不能在一分钟内有99秒——我猜这是一个打字错误？

    Dim someDate As DateTime = DateTime.Now
    Dim StartDateTime As DateTime = someDate.Date
    'last measurable instant for a given date
    Dim EndDateTime As DateTime = someDate.Date.Add(New TimeSpan(TimeSpan.TicksPerDay - 1))