This question already has answers here:
Calculate difference between two dates (number of days)?
(17 answers)
Closed 9 years ago.
We want to find the number of days between two dates. This is simple when the dates are in the same year.
Is there a built-in way to do this if the dates are in different years, or do we just have to loop through each year?
Subtracting a date from another yields a TimeSpan. You can use this to determine the number of whole days using the Days property, or whole and fractional days using the TotalDays property.
DateTime start = ...;
DateTime end = ...;
int wholeDays = (end - start).Days;
or
double totalAndPartialDays = (end - start).TotalDays;
you can probably do something like:
TimeSpan ts = endDate - startDate;
ts.Days
What are you missing?
DateTime - DateTime => Timespan
and Timespan has Days and TotalDays properties.
DateTime date1 = DateTime.Now;
DateTime date2 = new DateTime(date1.Year - 2, date1.Month, date1.Day);
Int32 difference = date1.Subtract(date2).Days;
Related
This question already has answers here:
Rounding up a time to the nearest hour
(6 answers)
Closed 1 year ago.
I need to get the round of current hour, for an example date 28/05/2021 2:16 PM , but i need 28/05/2021 2:00 PM just ignore the minute.
This sould work
DateTime date = DateTime.Now;
DateTime formattedDate = date.AddMinutes(-date.Minute);
Or
DateTime date = DateTime.Now;
DateTime formattedDate = date.Date.AddHours(date.Hour);
to also exclude the seconds
This question already has answers here:
Date Difference in ASP.Net
(6 answers)
Closed 3 years ago.
I organized a program which started on 31st December 2018 at 10:00pm hence its been four months ago, i want a way to find this duration by code.
for example , how youtube is able to tell when a comment was written(eg,4years ago,5 months ago).
You can simply substract a DateTime object from another, which results in a TimeSpan representing the difference:
DateTime x = DateTime.Now;
DateTime y = DateTime.Today;
TimeSpan difference = x - y;
var programStartDateTime = new DateTime(2018, 12, 31);
var timeSpan = DateTime.Now - programStartDateTime;
Console.WriteLine($"The difference is: {timeSpan.ToString()}");
I think below sample code may help you
DateTime date1 = DateTime.Now;
DateTime date2 = DateTime.Now.AddDays(-1);
TimeSpan time = date1 - date2;
WriteLine($"TimeSpan : {time}" );
This question already has answers here:
Add hours or minutes to the current time
(4 answers)
Closed 5 years ago.
I want to add 30 minutes to my date time variable.
My code:
string time = ViewState["CloseTime"].ToString();
DateTime Closetime = DateTime.ParseExact(time, "HH:mm:ss", CultureInfo.InvariantCulture);
Here my datetime variable is Closetime. I want to add 30 minute to it. How is it possible?
Use:
DateTime currentTime = DateTime.Now;
DateTime x30MinsLater = currentTime.AddMinutes(30);
Console.WriteLine(string.Format("{0} {1}", currentTime, x30MinsLater));
Result:
4/11/2017 3:53:20 PM 4/11/2017 4:23:20 PM
Try AddMinutes(),
DateTime newDate = Closetime.AddMinutes(30);
Simply use CloseTime.AddMinutes(30);. Make sure that this results in a new DateTime object.
var newTime = CloseTime.AddMinutes(30);
To add 30 minutes to a DateTime variable, the following will work:
CloseTime = CloseTime.AddMinutes(30);
There are similar methods for adding seconds, hours, days, etc.
See here for the documentation: Methods for DateTime Struct
This question already has answers here:
Calculate Years, Months, weeks and Days
(11 answers)
Closed 6 years ago.
I want exact Year, Month and Day elapsed between two dates.
DateTime startDate = new DateTime(1974, 8, 15);
DateTime endDate = DateTime.Now.ToLocalTime();
I wish to find Number of Years, Months and Days elapsed between the above two days using C#?
My Expected Output
Years: 68 Months: 10 Days: 23
I referred one of the post, in that they explained about only days Calculate difference between two dates (number of days)?
But I need all three - Year, Month and Day. Kindly assist me how to calculate...
Explanation for Duplicate:
Already a question with same logic posted in Calculate Years, Months, weeks and Days, the answer provided in that question is too lengthy and in my question I asked only Year, Month and Date not Week. The Concept is same but the logic is different for calculating days comparing to that question, Here I got the answer in a very simplified manner. I satisfied in my answer.
Exact Duplicate:
Original Question: How to get difference between two dates in Year/Month/Week/Day? (Asked 7 Years ago)
Your Marked Question: Calculate Years, Months, weeks and Days (Asked 5 Years ago)
Interesting Question:
The Solution is
void Main()
{
DateTime zeroTime = new DateTime(1, 1, 1);
DateTime olddate = new DateTime(1947, 8,15);
olddate.Dump();
DateTime curdate = DateTime.Now.ToLocalTime();
curdate.Dump();
TimeSpan span = curdate - olddate;
// because we start at year 1 for the Gregorian
// calendar, we must subtract a year here.
int years = (zeroTime + span).Year - 1;
int months = (zeroTime + span).Month - 1;
int days = (zeroTime + span).Day;
years.Dump();
months.Dump();
days.Dump();
}
This question already has an answer here:
How can I calculate how many nights are there in a date range?
(1 answer)
Closed 7 years ago.
I have a start DateTime and an end DateTime and need to calculate the number of nights (not days) between the two with a default/minimum value being 1.
I've got
int NumberOfDays = Convert.ToInt32((EndDateTime - StartDateTime).Days)
Which returns the number of days so is always over by 1. I'm not sure that subtracting 1 from the result is an appropriate solution.
I have also tried
int NumberOfDays = Convert.ToInt32((EndDateTime - StartDateTime).ToDays)
Which also returns the same result.
Is there a smarter solution other than subtracting 1 every time and making sure it never returns a 0?
You can use extension method to make it simply reuse everywhere.
public static class DateTimeExtensions
{
public static int NumberOfNights(this DateTime date1, DateTime date2)
{
//feel free to make here better
var frm = date1 < date2 ? date1 : date2;
var to = date1 < date2 ? date2 : date1;
var totalDays = (int)(to-frm).TotalDays;
return totalDays > 1 ? totalDays : 1;
}
}
And use it like
var to = DateTime.Now.AddDays(3);
var frm = DateTime.Now;
frm.NumberOfNights(to)