CODEWITHSUNDEEP
c#datetime
Andy
Andy

Reputation: 383

How to add day to DateTime at end of month?

I'm creating a DateTime by adding a day to the current date (shown below). I need the specific time set as shown below as well. This code below works great until I get to the end of the month where I'm trying to add a day.

Can you help me change my code so that it works when the current day is at the end of a month and I'm trying to add a day so that it switches to December 1st instead of November 31st (for example) and throws an error. 

var ldUserEndTime = new DateTime(dateNow.Year, dateNow.Month, dateNow.Day + 1, 00, 45, 00);

Upvotes: 10

Views: 2229

Answers (4)

Soner Gönül
Soner Gönül

Reputation: 98740

You just need to use DateTime.AddDays method with using Date property to get it's midnight and add 45 minutes.

var ldUserEndTime = dateNow.AddDays(1).Date.AddMinutes(45);

Since there is no as a 31st day in November, this constructor throws exception.

From Exception section on DateTime(Int32, Int32, Int32, Int32, Int32, Int32) page;

ArgumentOutOfRangeException - day is less than 1 or greater than the number of days in month

Upvotes: 13

Gary McGill
Gary McGill

Reputation: 27516

var ldUserEndTime = DateTime.Today + new TimeSpan(1, 0, 45, 0);

Upvotes: 2

René Vogt
René Vogt

Reputation: 43876

This should do the trick:

DateTime ldUserEndTime = DateTime.Today.AddDays(1).AddMinutes(45);

Upvotes: 2

rory.ap
rory.ap

Reputation: 35260

Maybe some kind of hybrid approach would work best for you so you can get the time component and add the day without having the trouble at the end of the month:

var ldUserEndTime = new DateTime(dateNow.Year, dateNow.Month, dateNow.Day, 00, 45, 00).AddDays(1);

The AddDays method will automatically take into account the month rollover, so if today is the end of the month (hey, it is!), then you'll get 2015-12-01 12:45:00.

Upvotes: 6

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