DateTime In C# + Compare Datetime

Question

I need format type DateTime into: "dd/mm/yyyy".
I want to add, sub, compare between 2 DateTime. ex: 23/12/1991 > 2/1/1990. 23/12/1991 - 20(days) = 3/12/1991 Could you help me, please.! Thank very much.! ^^

score 2 · Accepted Answer · answered Dec 15 '11 at 03:15

2

To get that format use:

yourDate.ToString("dd/MM/yyyy);

To add to a date:

yourDate.AddDays(15);
yourDate.AddMonths(3);

and so on

To subtract from a date

yourDate.AddDays(-12);
yourDate.AddMonths(-3);

and so on

And any date objects can be compared with the normal > < <= >= operators.

answered Dec 15 '11 at 03:15

Adam Rackis

I need get random DateTime between 2 Days. ex: between 1/2/2003 and 2/3/2003??? Thank for help me.! – Võ Hoài Lên Dec 15 '11 at 03:35
@VõHoàiLên - to get a random date, have a look at this http://stackoverflow.com/questions/194863/random-date-in-c-sharp – Adam Rackis Dec 15 '11 at 03:40

MPelletier · Answer 2 · 2011-12-15T03:20:45.087

0

Format:

dateTime.ToString("dd/MM/yyyy");

Add and Sub: Look at the different overload of DateTime.Add and the various others (AddDays, AddHours, etc).

Compare:

dateTime1 - dateTime2

That will return a Timespan. You can thus do:

(dateTime1-dateTime2).Days >= 20

edited Dec 15 '11 at 03:20

answered Dec 15 '11 at 03:15

MPelletier

score 0 · Answer 3 · answered Dec 15 '11 at 03:17

To format the string representation if you can do the following:

var date = DateTime.Now;
var dateString = date.ToString("dd/MM/yyyy");

In order the add/sub days to a DateTime object, use the AddDays() method:

// Subtract 20 days
var date = DateTime.Now;
var twentyDaysAgo = date.AddDays(-20);

There is also an AddMonths() method that works in the same way.

3 Answers3