Solved

Which is the best way to find Date difference between two dates in C#?

Posted on 2010-09-08
4
342 Views
Last Modified: 2012-05-10
Please submit a code snippet which is most efficient one.. I know about TimeSpan Class Method is there any other method thats more effective?
0
Comment
Question by:starlite551
4 Comments
 
LVL 65

Expert Comment

by:rockiroads
ID: 33633883
Not that I know off. I thought it better to use what is available in dotnet and for c# that seems to be it.

A little discussion on that here including an alternative using vb namespaces http://www.c-sharpcorner.com/UploadFile/DipalChoksi/DateDiff_CS_DC09132006172429PM/DateDiff_CS_DC.aspx
0
 
LVL 10

Expert Comment

by:joriszwaenepoel
ID: 33633957
dim date1 as datetime = ...
dim date2 as datetime = ...

dim datediff = date2.subtract(date1)

This gives you a TimeSpan object with all the information.  What makes you think this is not efficient?
0
 
LVL 13

Assisted Solution

by:Naman Goel
Naman Goel earned 125 total points
ID: 33634192
actually DateTime.Subtract method should be fine as it is just doing simple subtraction, so this method will be too fast and good.
 
 

public TimeSpan Subtract(DateTime value)
{
    return new TimeSpan(this.InternalTicks - value.InternalTicks);
}

public DateTime Subtract(TimeSpan value)
{
    long internalTicks = this.InternalTicks;
    long num2 = value._ticks;
    if ((internalTicks < num2) || ((internalTicks - 0x2bca2875f4373fffL) > num2))
    {
        throw new ArgumentOutOfRangeException("value", Environment.GetResourceString("ArgumentOutOfRange_DateArithmetic"));
    }
    return new DateTime(((ulong) (internalTicks - num2)) | this.InternalKind);
}

Open in new window

0
 
LVL 14

Accepted Solution

by:
existenz2 earned 125 total points
ID: 33661625
Using substract is the most efficient. Using ticks is a bit slower (see code example):
DateTime now = DateTime.Now;
            DateTime last = DateTime.Now.AddHours(-4);

            Stopwatch watch = new Stopwatch();
            watch.Start();
            for(int i = 0; i < 1000000; i++)
            {
                TimeSpan timeSpan = now.Subtract(last);
            }
            watch.Stop();
            Console.WriteLine(watch.ElapsedMilliseconds);

            Stopwatch watch2 = new Stopwatch();
            watch2.Start();
            for (int i = 0; i < 1000000; i++)
            {
                long ticks = now.Ticks - last.Ticks;
            }
            watch2.Stop();
            Console.WriteLine(watch2.ElapsedMilliseconds);

            Console.Read();

Open in new window

0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Suggested Solutions

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 article aims to explain the working of CircularLogArchiver. This tool was designed to solve the buildup of log file in cases where systems do not support circular logging or where circular logging is not enabled
The viewer will learn how to clear a vector as well as how to detect empty vectors in C++.
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…

713 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