如何在 C# 中添加时间？
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How do I add times in C#?
提问by
How do I add times in C#? For example:
如何在 C# 中添加时间？例如：
Time = "14:20 pm" + "00:30 pm"
回答by James
回答by Colin Pickard
Assuming you want to add 30 minutes to a given DateTime, you can use AddMinutes.
假设您想为给定的 DateTime 添加 30 分钟，您可以使用AddMinutes。
TestTime.AddMinutes(30);
Another way of doing it:
另一种方法：
DateTime TestTime = DateTime.Parse("22 Jun 2009 14:20:00");
// Add 30 minutes
TestTime = TestTime + TimeSpan.Parse("00:30:00");
回答by Kirschstein
TimeSpan t1 = new TimeSpan(14, 20,0);
TimeSpan t2 = new TimeSpan(0,30,0);
Console.Out.WriteLine(t1 + t2);
回答by MSalters
You can't add those, just like you can't add "14:20PM" and the color red. You can add a time and a timespan (14:20PM + 30 minutes) or two timespans (2 hours+30 minutes). But you cannot add two times.
你不能添加这些，就像你不能添加“14:20PM”和红色一样。您可以添加一个时间和一个时间跨度（下午 14:20 + 30 分钟）或两个时间跨度（2 小时 + 30 分钟）。但是不能加两次。
To make this even clearer, consider what would happen if you could add two times: 14.20 + 00:30 (EST) = 23.20 + 09:30 (UTC)
为了更清楚地说明这一点，请考虑如果可以添加两次会发生什么情况：14.20 + 00:30 (EST) = 23.20 + 09:30 (UTC)
回答by weiqure
Try this (although 0:30pm doesn't make sense):
试试这个（虽然 0:30pm 没有意义）：
class Program
{
static void Main(string[] args)
{
Console.WriteLine(new StringTime("14:20 pm").Add(new StringTime("0:30 pm")));
Console.WriteLine(new StringTime("15:00 pm").Add(new StringTime("0:30 pm")));
Console.WriteLine(new StringTime("5:00am").Add(new StringTime("12:00pm")));
}
}
class StringTime
{
public int Hours { get; set; }
public int Minutes { get; set; }
public bool IsAfternoon { get; set; }
public StringTime(string timeString)
{
IsAfternoon = timeString.Contains("pm");
timeString = timeString.Replace("pm", "").Replace("am", "").Trim();
Hours = int.Parse(timeString.Split(':')[0]);
Minutes = int.Parse(timeString.Split(':')[1]);
}
public TimeSpan ToTimeSpan()
{
if (IsAfternoon)
{
if (Hours < 12)
{
Hours += 12;
}
}
return new TimeSpan(Hours, Minutes, 00);
}
public TimeSpan Add(StringTime time2)
{
return this.ToTimeSpan().Add(time2.ToTimeSpan());
}
}
Output (the value before the dot are days):
输出（点前的值为天）：
1.02:50:00
1.03:30:00
17:00:00
1.02:50:00
1.03:30:00
17:00:00
