How to subtract int Year(from user input) from DateTime.Now.Year?

Question

I have a method Age() that returns the age of a car( subtracted from the year of production which is an int based on user input and it has to be an int).

Also, from this method I raise an event that shows me the age of the car. I only need the year, no months or days. My code is something like this and it's not working.The event is raised, but no value is shown. No errors in the code.

public int Age()
{

int Year= DateTime.Now.Year; // only the year in int

int YIP=Year-Year of production; // Year of production from user input

return YIP;

}

*My code is something like this and it's not working.* What doesn't work? — Patrick Hofman, Apr 03 '18 at 08:26
Are you getting any error? Post the related piece of code too, then only someone would be able to help you. — Vikram Kumar, Apr 03 '18 at 08:32
I'm not getting any errors(and it's weird ), even with code like this. I'm just a beginner trying to learn. The event is raised, but no value is shown. — Anomaly, Apr 03 '18 at 08:47
Possible duplicate of [How do I calculate someone's age in C#?](https://stackoverflow.com/questions/9/how-do-i-calculate-someones-age-in-c) — mschuurmans, Apr 03 '18 at 08:53

score 1 · Answer 1 · edited Apr 03 '18 at 08:44

1

You can use AddYears with a negative value for year:

var myNewDateMinusOneYear = Datetime.Today.AddYears(-1)

Additional resources

DateTime.AddYears Method (Int32)

Returns a new DateTime that adds the specified number of years to the value of this instance.

Return Value Type: System.DateTime An object whose value is the sum of the date and time represented by this instance and the number of years represented by value.

Remarks This method does not change the value of this DateTime object. Instead, it returns a new DateTime object whose value is the result of this operation.

edited Apr 03 '18 at 08:44

Patrick Hofman

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answered Apr 03 '18 at 08:31

TheGeneral

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This sounds more like a rant than an answer. Please [*Be Nice*](https://stackoverflow.com/help/be-nice). – Patrick Hofman Apr 03 '18 at 08:39
@PatrickHofman nah, someone upvoted i'm still not a multiple of 5 though so this will have to go – TheGeneral Apr 03 '18 at 08:40
You could also turn this into a non-rant answer. – Patrick Hofman Apr 03 '18 at 08:41
@PatrickHofman advice taken, and sanitized – TheGeneral Apr 03 '18 at 08:43
@PatrickHofman thanks ;) – TheGeneral Apr 03 '18 at 08:44

score 0 · Answer 2 · edited Apr 03 '18 at 10:21

0

Just use the below code, it should help you.

var previousYear = System.DateTime.Now.AddYears(-1);

edited Apr 03 '18 at 10:21

Soner Gönül

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answered Apr 03 '18 at 09:24

anantverma_

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How to subtract int Year(from user input) from DateTime.Now.Year?

2 Answers2