Solved

C# Calculate the difference between two hours

Posted on 2013-05-16
2
614 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

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

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

Suggested Solutions

This article is for Object-Oriented Programming (OOP) beginners. An Interface contains declarations of events, indexers, methods and/or properties. Any class which implements the Interface should provide the concrete implementation for each Inter…
Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
This Micro Tutorial will give you a basic overview how to record your screen with Microsoft Expression Encoder. This program is still free and open for the public to download. This will be demonstrated using Microsoft Expression Encoder 4.
This is used to tweak the memory usage for your computer, it is used for servers more so than workstations but just be careful editing registry settings as it may cause irreversible results. I hold no responsibility for anything you do to the regist…

911 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