我有以下代码,当前给出了一个时间跨度列表,其中包含一小时/分钟(24小时格式)。我需要更改string.format以显示小时/分钟AM或PM(12小时格式)。
var availableTimes =
_appointmentService.GetAvailableHours(date, appointmentId)
.Select(x => string.Format("{0:D2}:{1:D2}", x.Hours, x.Minutes));
最好的方法是怎样做的?我没有看到任何时间跨度。
*这是它使用的GetAvailableHours方法。
public IEnumerable<TimeSpan> GetAvailableHours(DateTime? date, int? appointmentId)
{
if (date == null) return null;
var hours = new List<DateTime>();
for (var ts = new TimeSpan(); ts <= new TimeSpan(23, 30, 0); ts = ts.Add(new TimeSpan(0, 30, 0)))
{
hours.Add(date.Value + ts);
}
var booked = _appointmentRepository.Get
.Where(x =>
(!appointmentId.HasValue || x.Id != appointmentId))
.Select(x => x.ScheduledTime).ToList();
//return available hours from shifts
var workingHours = from h in hours
from s in
_scheduleRepository.Get.Where(
x => x.ShiftStart <= h && x.ShiftEnd >= EntityFunctions.AddHours(h, 1))
where
s.ShiftStart <= h && s.ShiftEnd >= h.AddHours(-1) &&
booked.Count(x => x == h) == 0
select h.TimeOfDay;
//match available hours with another appointment
return workingHours.Distinct();
}
答案 0 :(得分:6)
[Test]
public void TimeSpan_PmAmFormat()
{
TimeSpan timeSpan = new TimeSpan(23, 20, 0);
DateTime dateTime = DateTime.MinValue.Add(timeSpan);
CultureInfo cultureInfo = CultureInfo.InvariantCulture;
// optional
//CultureInfo cultureInfo = new CultureInfo(CultureInfo.CurrentCulture.Name);
//cultureInfo.DateTimeFormat.PMDesignator = "PM";
string result = dateTime.ToString("hh:mm tt", cultureInfo);
Assert.True(result.StartsWith("11:20 PM"));
}
答案 1 :(得分:3)
您似乎可以更改代码,以便轻松返回IEnumerable<DateTime>
。
//Get your distinct time spans
var distinctTimeSpans = workingHours.Distinct();
//Build date objects from the parameter and time span objects
var dates = distinctTimeSpans.Select(ts => new DateTime(date.Value.Year, date.Value.Month, date.Value.Day, ts.Hours, ts.Minutes, ts.Seconds));
然后,您可以在ToString()
对象上致电DateTime
:.ToString("hh:mm tt")