How do I split a timespan to splitted days

Question

2.67/5 (2 votes)

See more:

Hi folks,

First of all sorry for my bad English! but I have a problem that I can't solve ...

I have an object (Appointment) which has several attributes (2 of them are named StartDate and EndDate)
e.g.:
- StartDate = 2014/3/3 17:00:00
- EndDate = 2014/3/8 08:00:00

Is it possible to split these Appointments as following:
Appointment => StartDate = 2014/3/3 17:00:00 EndDate = 2014/3/3 23:59:59 + original attributes
Appointment => StartDate = 2014/3/4 00:00:00 EndDate = 2014/3/4 23:59:59 + original attributes
Appointment => StartDate = 2014/3/5 00:00:00 EndDate = 2014/3/5 23:59:59 + original attributes
Appointment => StartDate = 2014/3/6 00:00:00 EndDate = 2014/3/6 23:59:59 + original attributes
Appointment => StartDate = 2014/3/7 00:00:00 EndDate = 2014/3/7 23:59:59 + original attributes
Appointment => StartDate = 2014/3/8 00:00:00 EndDate = 2014/3/8 08:00:00 + original attributes

And return this as a List<appointments> (splitted Appointments)

It seems possible but at this moment I can't figure it out

I have googled for this problem but neither google doesn't find the answer...

Many thanks in advance!

Crappy code I have for the moment...

C#

private List<Appointment> SplitMultidayAppointments(Appointment app)
        {
            DateTime startdate = app.StartDate;
            DateTime enddate = app.EndDate;
            List<Appointment> splitdates = new List<Appointment>();
            DateTime newStartDate = new DateTime();
            DateTime newEndDate = new DateTime();
            Appointment split = app;
            if ((enddate - startdate).TotalDays > 1) //firstdaycheck
            {
                split.StartDate = app.StartDate;
                split.EndDate = new DateTime(split.StartDate.Year, split.StartDate.Month, split.StartDate.Day, 23, 59, 59);
                 
                splitdates.Add(split);

                newStartDate = split.EndDate.AddSeconds(1);
            }

            while (DateTime.Compare(enddate, newStartDate) >0)
            {
                split.StartDate = newStartDate;
                    split.EndDate = new DateTime(newStartDate.Year, newStartDate.Month, newStartDate.Day, 23, 59, 59);
                

                splitdates.Add(split);
                newStartDate = newStartDate.AddDays(1);
            }

            split.StartDate = newStartDate;
            split.EndDate = app.EndDate;
            splitdates.Add(split);

            return splitdates;
        }

Posted 3-Mar-14 7:13am

aanbidmij

Updated 3-Mar-14 7:32am

v2

Add a Solution

Comments

Sergey Alexandrovich Kryukov 3-Mar-14 13:15pm

What are "splitted days"? :-)
—SA

aanbidmij 3-Mar-14 13:24pm

I don't know if I explained it well...
now I have one appointment with start and End date. (start and end date are over mutiple days)

Krunal Rohit 3-Mar-14 13:19pm

What do you want as a result ?

-KR

aanbidmij 3-Mar-14 13:27pm

A list of "New" appointments starting with

obj 1 start of appointment => to end of day (23:59:59)
obj 2 start + 1 day (starting with 00:00:00) ending with (23:59:59)
...
last object start last day (starting with 00:00:00) ending with end time of original object

Matt T Heffron 3-Mar-14 13:42pm

Your solution doesn't create multiple Appointments, it is just reusing the same one over again with modified StartDate/EndDate.
See my Solution below.

aanbidmij 3-Mar-14 14:07pm

I know, there are a lot of attributes so I tought it would be easier to copy the original appointment and change the start and end time. However in my solutions the changed appointments are using te same refferences so if the last one is changed the previous appointmens are changed to...

Matt T Heffron 3-Mar-14 14:33pm

But you AREN'T copying it.
At least you haven't shown anything that COPIES it.
You're just adding it to the List multiple times.

aanbidmij 3-Mar-14 14:33pm

Pretty close, but the first object has to start with the original time... e.g. 8 o'Clock
and last object has to end with the original endtime ... e.g. 17 o'clock
the objects in between start with 8 o'clock

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Matt T Heffron · Accepted Answer · 2014-03-03T07:40:00

Pretty close to what you have...

C#

class Appointment
{
  public DateTime StartDate { get; set; }
  public DateTime EndDate { get; set; }
}
static void Main(string[] args)
{
  var fullAppt = new Appointment() { StartDate = new DateTime(2014, 3, 3, 17, 0, 0), EndDate = new DateTime(2014, 3, 8, 8, 0, 0) };  //EDIT: corrected the example Start/End values
  List<Appointment> splitAppt = SplitAppointment(fullAppt);
}
static List<Appointment> SplitAppointment(Appointment appt)
{
  TimeSpan oneDay = TimeSpan.FromDays(1);
  TimeSpan endOfDay = oneDay - TimeSpan.FromTicks(1); // last possible time of a day
  List<Appointment> result = new List<Appointment>();
  DateTime currentDay = appt.StartDate;
  DateTime endOfCurrentDay = currentDay.Date + endOfDay;
  while (endOfCurrentDay < appt.EndDate)
  {
    result.Add(new Appointment() { StartDate = currentDay, EndDate = endOfCurrentDay });
    // copy other attributes of appt
    currentDay = currentDay.Date + oneDay;   // EDIT: changed this line
    endOfCurrentDay += oneDay;
  }
  if (currentDay < appt.EndDate)
  {
    result.Add(new Appointment() { StartDate = currentDay, EndDate = appt.EndDate });
    // copy other attributes of appt
  }

  return result;
}

Edited: See above.