如何获取给定日期一年内的总天数

I would like to get the total number of days in a year left from the given date .. Assume if a user gives 04-01-2011(MM-DD-YYYY) I would like to find the remaining days left. How to do this..

我想获得从给定日期开始一年内剩余的总天数。假设用户是否给出了04-01-2011(MM-DD-YYYY),我想找到剩下的剩余天数。这个怎么做..

4 个解决方案

#1

Let's say the date is today:

假设今天的日期是:

var user = "05-08-2012";
var date = DateTime.ParseExact(user, "MM-dd-yyyy", System.Globalization.CultureInfo.InvariantCulture);
var lastdate = new DateTime(date.Year, 12, 31);
var diff = lastdate - date;

diff.TotalDays contains the number of days (thanks @Tung). lastdate also contains the last date for the year.

diff.TotalDays包含天数(感谢@Tung)。 lastdate还包含一年的最后日期。

#2

should do the trick

应该做的伎俩

int daysLeft = new DateTime(DateTime.Now.Year, 12, 31).DayOfYear - DateTime.Now.DayOfYear;

int daysLeft = new DateTime(DateTime.Now.Year,12,31)。DayOfYear - DateTime.Now.DayOfYear;

#3

new DateTime(suppliedDate.Year, 12, 31).Subtract(suppliedDate).TotalDays

new DateTime(suppliedDate.Year,12,31).Subtract(suppliedDate).TotalDays

#4

I think you should try TimeSpan like

我想你应该试试TimeSpan

 DateTime startTime = DateTime.Now;

 DateTime endTime = DateTime.Now.AddSeconds( 75 );

 TimeSpan span = endTime.Subtract ( startTime );
 Console.WriteLine( "Time Difference (seconds): " + span.Seconds );
 Console.WriteLine( "Time Difference (minutes): " + span.Minutes );
 Console.WriteLine( "Time Difference (hours): " + span.Hours );
 Console.WriteLine( "Time Difference (days): " + span.Days );

#1