DateTimeHelper扩展类
来源：互联网 发布：网络自由度排名 编辑：程序博客网 时间：2024/06/08 13:49
using System;using System.Globalization;using System.Threading; namespace TestBjDs{ public static class DateTimeHelper { public static string DefaultFormat; static DateTimeHelper() { DefaultFormat = "yyyy-MM-dd"; } public static DateTime AddBusinessDays(this DateTime current, int days) { int num = Math.Sign(days); int num1 = Math.Abs(days); for (int i = 0; i < num1; i++) { do { current = current.AddDays(num); } while (current.DayOfWeek == DayOfWeek.Saturday || current.DayOfWeek == DayOfWeek.Sunday); } return current; } public static DateTime At(this DateTime current, int hour, int minute) { return current.SetTime(hour, minute); } public static DateTime At(this DateTime current, int hour, int minute, int second) { return current.SetTime(hour, minute, second); } public static DateTime At(this DateTime current, int hour, int minute, int second, int milliseconds) { return current.SetTime(hour, minute, second, milliseconds); } public static DateTime BeginningOfDay(this DateTime date) { return new DateTime(date.Year, date.Month, date.Day, 0, 0, 0, 0, date.Kind); } public static DateTime BeginningOfDay(this DateTime date, int timezoneOffset) { DateTime dateTime = new DateTime(date.Year, date.Month, date.Day, 0, 0, 0, 0, date.Kind); return dateTime.AddHours(timezoneOffset); } public static DateTime DecreaseTime(this DateTime startDate, TimeSpan toSubtract) { return startDate - toSubtract; } public static DateTime EndOfDay(this DateTime date) { return new DateTime(date.Year, date.Month, date.Day, 23, 59, 59, 999, date.Kind); } public static DateTime EndOfDay(this DateTime date, int timeZoneOffset) { DateTime dateTime = new DateTime(date.Year, date.Month, date.Day, 23, 59, 59, 999, date.Kind); return dateTime.AddHours(timeZoneOffset); } public static DateTime FirstDayOfMonth(this DateTime current) { return current.SetDay(1); } public static DateTime FirstDayOfQuarter(this DateTime current) { int month = (current.Month - 1) / 3 + 1; DateTime dateTime = new DateTime(current.Year, 3 * month - 2, 1); return current.SetDate(dateTime.Year, dateTime.Month, dateTime.Day); } public static DateTime FirstDayOfWeek(this DateTime dateTime) { DayOfWeek firstDayOfWeek = Thread.CurrentThread.CurrentCulture.DateTimeFormat.FirstDayOfWeek; int dayOfWeek = (int) dateTime.DayOfWeek + ((int) dateTime.DayOfWeek - (int) firstDayOfWeek < (int) DayOfWeek.Sunday ? 7 : 0) - (int) firstDayOfWeek; return dateTime.AddDays(-dayOfWeek); } public static DateTime FirstDayOfYear(this DateTime current) { return current.SetDate(current.Year, 1, 1); } public static int GetDateTimeMonthDifference(DateTime startDate, DateTime endDate) { int month; try { int year = (endDate.Year - startDate.Year) * 12; month = endDate.Month - startDate.Month + year; } catch (Exception exception) { throw exception; } return month; } public static DateTime IncreaseTime(this DateTime startDate, TimeSpan toAdd) { return startDate + toAdd; } public static bool IsAfter(this DateTime current, DateTime toCompareWith) { return current > toCompareWith; } public static bool IsBefore(this DateTime current, DateTime toCompareWith) { return current < toCompareWith; } public static bool IsBetweenTwoTimes(this DateTime current, DateTime time1, DateTime time2) { DateTime dateTime = time1 > time2 ? time2 : time1; DateTime dateTime1 = time1 < time2 ? time2 : time1; if (current <= dateTime) { return false; } return current < dateTime1; } public static bool IsBiggerThan(this DateTime current, DateTime dateTime) { return current > dateTime; } public static bool IsInFuture(this DateTime dateTime) { return dateTime > DateTime.Now; } public static bool IsInPast(this DateTime dateTime) { return dateTime < DateTime.Now; } public static DateTime LastDayOfMonth(this DateTime current) { return current.SetDay(DateTime.DaysInMonth(current.Year, current.Month)); } public static DateTime LastDayOfQuarter(this DateTime current) { int month = (current.Month - 1) / 3 + 1; DateTime dateTime = current.SetDate(current.Year, 3 * month - 2, 1); return dateTime.SetMonth(dateTime.Month + 2).LastDayOfMonth(); } public static DateTime LastDayOfWeek(this DateTime current) { return current.FirstDayOfWeek().AddDays(6); } public static DateTime LastDayOfYear(this DateTime current) { return current.SetDate(current.Year, 12, 31); } public static DateTime Next(this DateTime start, DayOfWeek day) { do { start = start.NextDay(); } while (start.DayOfWeek != day); return start; } public static DateTime NextDay(this DateTime start) { return start.AddDays(1); } public static DateTime NextMonth(this DateTime current) { int num = current.Month == 12 ? current.Year + 1 : current.Year; DateTime dateTime = current.SetDate(num, current.Month == 12 ? 1 : current.Month + 1, 1); int day = dateTime.LastDayOfMonth().Day; return dateTime.SetDay(current.Day > day ? day : current.Day); } public static DateTime NextWeek(this DateTime start) { return start.AddDays(7); } public static DateTime NextYear(this DateTime start) { int year = start.Year + 1; int num = DateTime.DaysInMonth(year, start.Month); if (num >= start.Day) { return new DateTime(year, start.Month, start.Day, start.Hour, start.Minute, start.Second, start.Millisecond, start.Kind); } int day = start.Day - num; DateTime dateTime = new DateTime(year, start.Month, num, start.Hour, start.Minute, start.Second, start.Millisecond, start.Kind); return dateTime.AddDays(day); } public static DateTime Noon(this DateTime value) { return value.SetTime(12, 0, 0, 0); } public static DateTime Previous(this DateTime start, DayOfWeek day) { do { start = start.PreviousDay(); } while (start.DayOfWeek != day); return start; } public static DateTime PreviousDay(this DateTime start) { return start.AddDays(-1); } public static DateTime PreviousMonth(this DateTime current) { int num = current.Month == 1 ? current.Year - 1 : current.Year; DateTime dateTime = current.SetDate(num, current.Month == 1 ? 12 : current.Month - 1, 1); int day = dateTime.LastDayOfMonth().Day; return dateTime.SetDay(current.Day > day ? day : current.Day); } public static DateTime PreviousWeek(this DateTime start) { return start.AddDays(-7); } public static DateTime PreviousYear(this DateTime start) { int year = start.Year - 1; int num = DateTime.DaysInMonth(year, start.Month); if (num >= start.Day) { return new DateTime(year, start.Month, start.Day, start.Hour, start.Minute, start.Second, start.Millisecond, start.Kind); } int day = start.Day - num; DateTime dateTime = new DateTime(year, start.Month, num, start.Hour, start.Minute, start.Second, start.Millisecond, start.Kind); return dateTime.AddDays(day); } public static DateTime Round(this DateTime dateTime, RoundTo rt) { DateTime dateTime1; switch (rt) { case RoundTo.Second: { dateTime1 = new DateTime(dateTime.Year, dateTime.Month, dateTime.Day, dateTime.Hour, dateTime.Minute, dateTime.Second, dateTime.Kind); if (dateTime.Millisecond < 500) { break; } dateTime1 = dateTime1.AddSeconds(1); break; } case RoundTo.Minute: { dateTime1 = new DateTime(dateTime.Year, dateTime.Month, dateTime.Day, dateTime.Hour, dateTime.Minute, 0, dateTime.Kind); if (dateTime.Second < 30) { break; } dateTime1 = dateTime1.AddMinutes(1); break; } case RoundTo.Hour: { dateTime1 = new DateTime(dateTime.Year, dateTime.Month, dateTime.Day, dateTime.Hour, 0, 0, dateTime.Kind); if (dateTime.Minute < 30) { break; } dateTime1 = dateTime1.AddHours(1); break; } case RoundTo.Day: { dateTime1 = new DateTime(dateTime.Year, dateTime.Month, dateTime.Day, 0, 0, 0, dateTime.Kind); if (dateTime.Hour < 12) { break; } dateTime1 = dateTime1.AddDays(1); break; } default: { throw new ArgumentOutOfRangeException("rt"); } } return dateTime1; } public static DateTime SetDate(this DateTime value, int year) { return new DateTime(year, value.Month, value.Day, value.Hour, value.Minute, value.Second, value.Millisecond, value.Kind); } public static DateTime SetDate(this DateTime value, int year, int month) { return new DateTime(year, month, value.Day, value.Hour, value.Minute, value.Second, value.Millisecond, value.Kind); } public static DateTime SetDate(this DateTime value, int year, int month, int day) { return new DateTime(year, month, day, value.Hour, value.Minute, value.Second, value.Millisecond, value.Kind); } public static DateTime SetDay(this DateTime value, int day) { return new DateTime(value.Year, value.Month, day, value.Hour, value.Minute, value.Second, value.Millisecond, value.Kind); } public static DateTime SetHour(this DateTime originalDate, int hour) { return new DateTime(originalDate.Year, originalDate.Month, originalDate.Day, hour, originalDate.Minute, originalDate.Second, originalDate.Millisecond, originalDate.Kind); } public static DateTime SetMillisecond(this DateTime originalDate, int millisecond) { return new DateTime(originalDate.Year, originalDate.Month, originalDate.Day, originalDate.Hour, originalDate.Minute, originalDate.Second, millisecond, originalDate.Kind); } public static DateTime SetMinute(this DateTime originalDate, int minute) { return new DateTime(originalDate.Year, originalDate.Month, originalDate.Day, originalDate.Hour, minute, originalDate.Second, originalDate.Millisecond, originalDate.Kind); } public static DateTime SetMonth(this DateTime value, int month) { return new DateTime(value.Year, month, value.Day, value.Hour, value.Minute, value.Second, value.Millisecond, value.Kind); } public static DateTime SetSecond(this DateTime originalDate, int second) { return new DateTime(originalDate.Year, originalDate.Month, originalDate.Day, originalDate.Hour, originalDate.Minute, second, originalDate.Millisecond, originalDate.Kind); } public static DateTime SetTime(this DateTime originalDate, int hour) { return new DateTime(originalDate.Year, originalDate.Month, originalDate.Day, hour, originalDate.Minute, originalDate.Second, originalDate.Millisecond, originalDate.Kind); } public static DateTime SetTime(this DateTime originalDate, int hour, int minute) { return new DateTime(originalDate.Year, originalDate.Month, originalDate.Day, hour, minute, originalDate.Second, originalDate.Millisecond, originalDate.Kind); } public static DateTime SetTime(this DateTime originalDate, int hour, int minute, int second) { return new DateTime(originalDate.Year, originalDate.Month, originalDate.Day, hour, minute, second, originalDate.Millisecond, originalDate.Kind); } public static DateTime SetTime(this DateTime originalDate, int hour, int minute, int second, int millisecond) { return new DateTime(originalDate.Year, originalDate.Month, originalDate.Day, hour, minute, second, millisecond, originalDate.Kind); } public static DateTime SetYear(this DateTime value, int year) { return new DateTime(year, value.Month, value.Day, value.Hour, value.Minute, value.Second, value.Millisecond, value.Kind); } public static DateTime SubtractBusinessDays(this DateTime current, int days) { return current.AddBusinessDays(-days); } public static DateTime ToDateTime(string date, string format = "yyyy-MM-dd") { DateTime dateTime; try { dateTime = DateTime.ParseExact(date, format, Thread.CurrentThread.CurrentCulture); } catch (Exception exception) { throw exception; } return dateTime; } public static string ToDateTimeStr(this string str, string format = "yyyy-MM-dd") { string empty; if (string.IsNullOrEmpty(str)) { return string.Empty; } try { DateTime dateTime = DateTime.Parse(str); empty = dateTime.ToString(format, DateTimeFormatInfo.InvariantInfo); } catch { empty = string.Empty; } return empty; } public static string ToStringExt(this DateTime date, string Format = "yyyy-MM-dd") { Format = string.IsNullOrEmpty(Format) ? DefaultFormat : Format; return date.ToString(Format, DateTimeFormatInfo.InvariantInfo); } }
public enum RoundTo { Second, Minute, Hour, Day }}
阅读全文
0 0
- DateTimeHelper扩展类
- 扩展类
- 扩展类
- 类扩展
- 扩展类
- 扩展javascript扩展(类，对象，原型)
- UIView的类扩展，扩展CGRect
- jQuery类扩展和实例扩展
- 扩展 WPF 动画类
- PHP扩展导出类
- PHP扩展导出类
- php分页类扩展
- Math类的扩展
- CxSkinButton类的扩展
- Qt扩展QextSerialPort类
- 扩展 WPF 动画类
- 扩展 WPF 动画类
- GDI+扩展类 VC
- 关于ScrollView嵌套RecyclerView时RecyclerView不显示的问题
- CentOS-7.0./linux中安装与配置Tomcat-7的方法
- hdu4046(树状数组)
- 存款问题
- 整理学习的框架(2)--mybatis+spring
- DateTimeHelper扩展类
- 感兴趣的很多，擅长的却没一个
- 如何用R连接mysql数据库
- oracle 系统表查询表是否死锁语句
- JS获取当前时间戳的方法
- JAVA中Equals和==的区别
- IntelliJ Idea 常用快捷键列表
- unity反向查找资源依赖
- std::map::find
