Solved

C# Calculate the difference between two hours

Posted on 2013-05-16
2
617 Views
Last Modified: 2013-05-16
I am using to dropdownlist boxes to allow users to select a start and end time.  I need to know the delta between the two.

so if ddlStart = 2:00 pm and ddlEnd = 3:00 pm then I need the delta 1 returned.
if however ddlStart = 2:00 pm and ddlEnd = 3:45 pm then I need the delta 1.75 returned.

Any ideas?
0
Comment
Question by:CipherIS
2 Comments
 
LVL 75

Accepted Solution

by:
käµfm³d   👽 earned 500 total points
ID: 39171916
string ddlStart = "2:00 PM";
string ddlEnd = "3:45 PM";
TimeSpan start = DateTime.Parse(ddlStart).TimeOfDay;
TimeSpan end = DateTime.Parse(ddlEnd).TimeOfDay;
TimeSpan diff = end - start;
double delta = diff.Hours + (diff.Minutes / 60D);

Open in new window

0
 
LVL 10

Expert Comment

by:eguilherme
ID: 39171924
Do you have those 2 values in a DateTime or TimeSpan object?

If so, its as simple as:

 //2:00 PM
var ddlStart = new DateTime(1900, 1, 1, 14, 0, 0);
//3:45 PM
var ddlEnd = new DateTime(1900, 1, 1, 15, 45, 0);

var Delta = ddlEnd.Subtract(ddlStart).TotalHours;
//Delta = 1.75

Open in new window

0

Featured Post

Technology Partners: 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

The ECB site provides FX rates for major currencies since its inception in 1999 in the form of an XML feed. The files have the following format (reducted for brevity) (CODE) There are three files available HERE (http://www.ecb.europa.eu/stats/exch…
Today I had a very interesting conundrum that had to get solved quickly. Needless to say, it wasn't resolved quickly because when we needed it we were very rushed, but as soon as the conference call was over and I took a step back I saw the correct …
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

679 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