Solved

On C# DateTime, how many days between d1 and d2?

Posted on 2004-03-31
5
2,641 Views
Last Modified: 2011-09-20
I have two instances of DateTime, d1 & d2.
How to calculate how many days between d1 and d2?

Thanks a lot.

I went to Microsoft website but couldn't find any
help there.

Jennifer
0
Comment
Question by:jfz2004
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
5 Comments
 
LVL 15

Expert Comment

by:Timbo87
ID: 10726817
TimeSpan t = d2 - d1;

TimeSpan has many methods to retrieve the difference in various formats. Check the .NET SDK for more information.
0
 

Author Comment

by:jfz2004
ID: 10726820
thanks.
0
 
LVL 10

Accepted Solution

by:
eternal_21 earned 50 total points
ID: 10726826
Here is a simple method:

  int CountDays(DateTime dateFrom, DateTime dateTo, bool including)
  {
    return ((System.TimeSpan)(dateTo - dateFrom)).Days + (including ? 1 : 0);
  }

  including = true if you want to include the last day (dateTo) in your count.
0
 

Author Comment

by:jfz2004
ID: 10726877
Just looked into TimeSpan.
Seems like TimeSpan doesn't have a constructor that
needs two DateTime.

How to resolve that?
0
 
LVL 10

Expert Comment

by:eternal_21
ID: 10726966
> "Seems like TimeSpan doesn't have a constructor that needs two DateTime."

What are you trying to do, or have you got the problem figured out?
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

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…
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
This video shows how to use Hyena, from SystemTools Software, to update 100 user accounts from an external text file. View in 1080p for best video quality.
Suggested Courses

738 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