C# 如何从给定日期获取一年中的总天数
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How to get the total number of days in a year from the given date
提问by Vivekh
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..
我想从给定日期获得一年中剩余的总天数 .. 假设如果用户给出04-01-2011(MM-DD-YYYY)我想找到剩余的天数。这该怎么做..
采纳答案by yamen
Let's say the date is today:
假设日期是今天：
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.TotalDayscontains the number of days (thanks @Tung). lastdatealso contains the last date for the year.
diff.TotalDays包含天数（感谢@Tung）。lastdate还包含该年的最后日期。
回答by Dejan Janju?evi?
new DateTime(suppliedDate.Year, 12, 31).Subtract(suppliedDate).TotalDays
new DateTime(suppliedDate.Year, 12, 31).Subtract(suppliedDate).TotalDays
回答by ry8806
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;
回答by Tanveer
I think you should try TimeSpan like
我认为你应该像 TimeSpan 一样尝试
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 );
