Solved

Formatting TimeSpan in C#

Posted on 2011-03-23
12
872 Views
Last Modified: 2012-06-27
How can I format a Date Difference in C# using timespan.subtract

Here is what I have so far, I need it to return in hh:mi format

If there is an easier way to do it other than timespan im open to it.  I just have to return this to the user in an hh:mi format.  Even (negative times) -hh:mi if the time returned is negative.

Thanks
DateTime startTime = new DateTime(); 
 DateTime endTime = new DateTime();
 TimeSpan conflictDuration = new TimeSpan();

startTime = 03/28/2011 11:45;
endTime =   03/28/2011 1:47;

conflictDuration = endTime.Subtract(startTime);

Open in new window

0
Comment
Question by:jmpatton
  • 6
  • 5
12 Comments
 
LVL 22

Accepted Solution

by:
p_davis earned 500 total points
ID: 35202107
string formatted = endTime.Subtract(startTime).ToString("hh:mm");
0
 
LVL 85

Expert Comment

by:Mike Tomlinson
ID: 35202302
Unfortunately the TimeSpan() class doesn't accept a format in ToString() so you have to manually extract the values and put them together yourself.  =\

Here's one way:
conflictDuration = endTime.Subtract(startTime);
string formatted = (conflictDuration.TotalMilliseconds < 0 ? "-" : "") + Math.Abs(conflictDuration.Hours).ToString("00") + ":" + Math.Abs(conflictDuration.Minutes).ToString("00");
MessageBox.Show(formatted);

Open in new window

0
 
LVL 22

Expert Comment

by:p_davis
ID: 35202354
poo, i don't know what the heck i was thinking.
0
 
LVL 85

Expert Comment

by:Mike Tomlinson
ID: 35202378
I've often wondered why they didn't implement a ToString() overload that accepts a format for the TimeSpan...it would make perfect sense to me!  =)
0
 
LVL 22

Expert Comment

by:p_davis
ID: 35202384
it would be hard for a span that was more than a day, i guess?
0
 
LVL 23

Expert Comment

by:wdosanjos
ID: 35202887
BTW, TimeSpan.ToString(format) is available in .NET 4:

    http://msdn.microsoft.com/en-us/library/dd992632.aspx

So, p_davis' answer is correct as long as it's .NET 4.

I hope this helps.
0
IT, Stop Being Called Into Every Meeting

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

 
LVL 85

Expert Comment

by:Mike Tomlinson
ID: 35203144
Woohoo!  Thanks for update wdosanjos.  =)

You have to escape the ":" though like this:
Dim dtA As DateTime = DateTime.Now
        Dim dtB As DateTime = dtA.AddDays(Math.PI)
        Dim ts As TimeSpan = dtB.Subtract(dtA)
        Label1.Text = ts.ToString("dd\:hh\:mm\:ss")

Open in new window


*This is different than the DateTime.ToString() method which is perfectly happy accepting an un-escaped colon!
0
 
LVL 22

Expert Comment

by:p_davis
ID: 35203166
what is this dim you speak of??? ;p
0
 
LVL 85

Expert Comment

by:Mike Tomlinson
ID: 35203187
Hahaha...grrrr....I'm always forgetting what ZONE I'm in!  =)

In not as beautiful as VB.Net, the C# equivalent would be:   *wink*
private void button1_Click(object sender, EventArgs e)
        {
            DateTime dtA = DateTime.Now;
            DateTime dtB = dtA.AddDays(Math.PI);
            TimeSpan ts = dtB.Subtract(dtA);
            label1.Text = ts.ToString(@"dd\:hh\:mm\:ss");
        }

Open in new window

0
 
LVL 22

Expert Comment

by:p_davis
ID: 35203203
well defined space of a function embraced by beautiful curly brackets.....all is right with the world
0
 
LVL 85

Expert Comment

by:Mike Tomlinson
ID: 35203217
// no comment;
0
 
LVL 22

Expert Comment

by:p_davis
ID: 35203963

code puns =)

don't hate!
0

Featured Post

IT, Stop Being Called Into Every Meeting

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

Join & Write a Comment

This article describes a simple method to resize a control at runtime.  It includes ready-to-use source code and a complete sample demonstration application.  We'll also talk about C# Extension Methods. Introduction In one of my applications…
It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, Just open a new email message.  In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…
Illustrator's Shape Builder tool will let you combine shapes visually and interactively. This video shows the Mac version, but the tool works the same way in Windows. To follow along with this video, you can draw your own shapes or download the file…

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

22 Experts available now in Live!

Get 1:1 Help Now