【C#-算法】根据生日自动计算年龄_DataTime 的 DateDiff 方法

dateTimePicker1.Value出生日期控件的值

long BirthDay = DateAndTime.DateDiff(DateInterval.Year, dateTimePicker1.Value, DateTime.Now, FirstDayOfWeek.Sunday, FirstWeekOfYear.Jan1);

转载于:https://www.cnblogs.com/Sukie-s-home/p/5309832.html