date - days calculations

Question

I was wondering if someone could help me with the following problem I have:

given a persons date of hire - calculate the number of days to their next anniversary date from today.

Any help in how to do this would be appreciated.

 

 

Answer 1

Hey

Have a look into this link

http://social.msdn.microsoft.com/Forums/en-US/csharpgeneral/thread/0625cefa-461b-4a3c-b7f0-d39d06741b70/

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Answer 2

 

DateTime dateOfHire;
int hireDay = dateOfHire.DayOfYear;
int today = DateTime.Now.DayOfYear;
if (hireDay < today)
{
    //TODO: add days in year based on whether this is a leap year or not
}
int countdown = hireDay - today;

I left a bit of edge cases to fill in, but it shouldn't be that hard given that datetime has an IsLeapYear method.

 

Answer 3

First determine what is the anniversary date this year. Add one year if that date is in the past. Subtract today from that date to obtain a TimeSpan. Get the Days of that TimeSpan.

DateTime dateOfHire = new DateTime(2000, 11, 1);
DateTime anniversary = new DateTime(DateTime.Today.Year, dateOfHire.Month, dateOfHire.Day);
if (anniversary < DateTime.Today) anniversary = anniversary.AddYears(1);

int countdown = (anniversary - DateTime.Today).Days;

 

Answer 4

Use TimeSpan class to get the difference between two dates:

            DateTime t1 = DateTime.Today;
            DateTime t2 = new DateTime(2012, 4, 12);
            TimeSpan ts = t2.Subtract(t1);
            int daysDiff = (int)ts.TotalDays;

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Mitja