How can I setup DateTime hour,minute and second?

Question

private void StartAuction()
{
    DateTime closeDate;
    closeDate = DateTime.Parse(Console.ReadLine());
}

I am able to set the date,month and year but I want the hours,minutes and seconds to setup automatically to the current time of the day. for example if the current time is 15:24, I want the user to add the date which could be 21/03/2013 and then I want the time to be 15:24:00 and not 00:00:00 as it currently does.

Any suggestions?

The first thing to do is not nest functions. It makes your code hard to read, debug and maintain. — Steve Wellens, Mar 19 '13 at 15:40
Consider using `TryParse` to handle errors in a graceful manner. — Jakub Konecki, Mar 19 '13 at 15:43

score 11 · Accepted Answer · edited Jul 12 '17 at 08:19

Well you can use DateTime.Now to get the current time, then take the TimeOfDay from that and add it to the Date of your existing DateTime:

private void StartAuction()
{
    DateTime closeDate = DateTime.Parse(Console.ReadLine());
    DateTime closeDateAtCurrentTime = closeDate.Date + DateTime.Now.TimeOfDay;
    ...
}

(I'm explicitly using the Date property so that even if the user does enter a time as well, it's basically stripped.)

As a blatant plug, you might also want to consider using my Noda Time library, which separates out the ideas of "date", "time" and "date/time" into different types. (As well as "local" values vs ones where you know the UTC offset or the time zone.)

Incorporated your use of `.Date` in my own answer which I'm keeping around simply for the fact that I wanted to explain the point you commented about - converting strings back and forth. — J. Steen, Mar 19 '13 at 15:53

J. Steen · Answer 2 · 2013-03-19T15:51:21.783

1

You could do

closeDate = DateTime.Parse(Console.ReadLine() + " " + DateTime.Now.TimeOfDay);

Which works, but does look a little roundabout and I wouldn't recommend it considering you're converting from a time format to a string and then back to a time format again. Lots of immutable objects being created, there.

There are other options, including to parse the date, as you do, and then add TimeOfDay to it.

DateTime closeDate;
closeDate = DateTime.Parse(Console.ReadLine());
closeDate = closeDate.Date + Date.Now.TimeOfDay;

edited Mar 19 '13 at 15:51

answered Mar 19 '13 at 15:41

J. Steen

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2

I wouldn't do it as part of the parsing part - you might as well parse it and *then* add the value. I generally prefer my code to have as few string conversions as possible :) – Jon Skeet Mar 19 '13 at 15:44
@JonSkeet I was writing out an alternative just as I saw your answer pop up. =) – J. Steen Mar 19 '13 at 15:45

score 1 · Answer 3 · answered Mar 19 '13 at 15:43

1

var now = DateTime.Now;
var date = new DateTime(input.Year, input.Month, input.Day, now.Hour, now.Minute, now.Second);

answered Mar 19 '13 at 15:43

Yahya

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score 1 · Answer 4 · answered Mar 19 '13 at 15:43

1

First you need to parse with DateTime.Parse what you read from command line.

Then, you can do that using DateTime.Now.TimeOfDay like;

DateTime closeDate = DateTime.Parse(Console.ReadLine());
closeDate = closeDate.Date + DateTime.Now.TimeOfDay;

answered Mar 19 '13 at 15:43

Soner Gönül

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score 0 · Answer 5 · answered Mar 19 '13 at 15:41

0

You can do this:

closeDate = DateTime.Parse(Console.ReadLine())
    .Add(DateTime.Now - DateTime.Today);

answered Mar 19 '13 at 15:41

Dave Bish

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score 0 · Answer 6 · answered Mar 19 '13 at 15:44

Well how about this little function:

public static DateTime ChangeTime(DateTime dateTime)
{
    return new DateTime(
        dateTime.Year,
        dateTime.Month,
        dateTime.Day,
        DateTime.Now.Hour,
        DateTime.Now.Minute,
        DateTime.Now.Second,
        DateTime.Now.Millisecond,
        DateTime.Now.Kind);
}

score 0 · Answer 7 · answered Mar 19 '13 at 15:45

0

This is a possible solution:

store DateTime.Now in a variable

var date = DateTime.Now;

Then u can access the Hours, Minutes and Seconds like this:

date.Hour;
date.Minute;
date.Second;

answered Mar 19 '13 at 15:45

pieterjanvh

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How can I setup DateTime hour,minute and second?

7 Answers7