using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ZB.QueueSys.Common
{
public class DateTimeHelper
{
//定义一个用于保存静态变量的实例
private static DateTimeHelper instance = null;
//定义一个保证线程同步的标识
private static readonly object locker = new object();
//构造函数为私有，使外界不能创建该类的实例
private DateTimeHelper() { }
public static DateTimeHelper Instance
{
get
{
if (instance == null)
{
lock (locker)
{
if (instance == null) instance = new DateTimeHelper();
}
}
return instance;
}
}
/// <summary>
/// 计算两个时间之差，获取分钟数
/// </summary>
/// <param name="one">减数</param>
/// <param name="two">被减数</param>
/// <returns></returns>
public double GetTotalMinutesByTime(DateTime one, DateTime two)
{
DateTime now = DateTime.Now;
TimeSpan times = one.Subtract(now);
double minutes = times.TotalMinutes;
return minutes;
}
/// <summary>
/// 计算当前时间 - 入参时间(获取分钟数；)
/// </summary>
/// <param name="time">被减数</param>
/// <returns></returns>
public double GetTotalMinutesByTime(DateTime time)
{
DateTime now = DateTime.Now;
TimeSpan times = now.Subtract(time);
double minutes = times.TotalMinutes;
return minutes;
}
/// <summary>
/// 根据日期返回 星期(返回结果为英文)
/// </summary>
/// <param name="date">日期</param>
/// <returns>星期</returns>
public string ConvertDateToENWeek(DateTime date)
{
DayOfWeek dt = new DateTime(date.Year, date.Month, date.Day).DayOfWeek;
return dt.ToString();
}
/// <summary>
/// 根据日期返回 星期(返回结果为中文)
/// </summary>
/// <param name="date">日期</param>
/// <returns>星期</returns>
public string ConvertDateToZHWeek(DateTime date)
{
string week = string.Empty;
if (string.IsNullOrEmpty(date.ToString())) return week;
DayOfWeek weekstr = new DateTime(date.Year, date.Month, date.Day).DayOfWeek;
switch (weekstr.ToString())
{
case "Monday": week = "星期一"; break;
case "Tuesday": week = "星期二"; break;
case "Wednesday": week = "星期三"; break;
case "Thursday": week = "星期四"; break;
case "Friday": week = "星期五"; break;
case "Saturday": week = "星期六"; break;
case "Sunday": week = "星期天"; break;
}
return week;
}
/// <summary>
/// 得到本周第一天(星期一为第一天)
/// </summary>
/// <param name="date"></param>
/// <returns></returns>
public DateTime GetWeekFirstDay(DateTime date)
{
int weeknow = Convert.ToInt32(date.DayOfWeek);//得到结果是以周日为本周第一天
weeknow = (weeknow == 0 ? (7 - 1) : (weeknow - 1));
int daydiff = (-1) * weeknow;
string FirstDay = date.AddDays(daydiff).ToString("yyyy-MM-dd") + " 00:00:00";
return Convert.ToDateTime(FirstDay);
}
/// <summary>
/// 得到本周最后一天(以星期天为最后一天)
/// </summary>
/// <param name="datetime"></param>
/// <returns></returns>
public DateTime GetWeekLastDay(DateTime date)
{
int weeknow = Convert.ToInt32(date.DayOfWeek);//得到结果是以周日为本周第一天
weeknow = (weeknow == 0 ? 7 : weeknow);
int daydiff = (7 - weeknow);
string LastDay = date.AddDays(daydiff).ToString("yyyy-MM-dd") + " 23:59:59";
return Convert.ToDateTime(LastDay);
}
/// <summary>
/// 计算本周的周一日期
/// </summary>
/// <returns></returns>
public DateTime GetMondayDate()
{
return GetMondayDate(DateTime.Now);
}
/// <summary>
/// 计算本周周日的日期
/// </summary>
/// <returns></returns>
private DateTime GetSundayDate()
{
return GetSundayDate(DateTime.Now);
}
/// <summary>
/// 计算某日起始日期（礼拜一的日期）
/// </summary>
/// <param name="someDate">该周中任意一天</param>
/// <returns>返回礼拜一日期，后面的具体时、分、秒和传入值相等</returns>
public DateTime GetMondayDate(DateTime someDate)
{
int i = someDate.DayOfWeek - DayOfWeek.Monday;
if (i == -1) i = 6;// i值 > = 0 ，因为枚举原因，Sunday排在最前，此时Sunday-Monday=-1，必须+7=6。
TimeSpan ts = new TimeSpan(i, 0, 0, 0);
return someDate.Subtract(ts);
}
/// <summary>
/// 计算某日结束日期（礼拜日的日期）
/// </summary>
/// <param name="someDate">该周中任意一天</param>
/// <returns>返回礼拜日日期，后面的具体时、分、秒和传入值相等</returns>
public DateTime GetSundayDate(DateTime someDate)
{
int i = someDate.DayOfWeek - DayOfWeek.Sunday;
if (i != 0) i = 7 - i;// 因为枚举原因，Sunday排在最前，相减间隔要被7减。
TimeSpan ts = new TimeSpan(i, 0, 0, 0);
return someDate.Add(ts);
}
public string GetTimeLength(DateTime beginTime, DateTime endTime)
{
try
{
string timeLength = string.Empty;
TimeSpan begin = new TimeSpan(beginTime.Ticks);
TimeSpan end = new TimeSpan(endTime.Ticks);
TimeSpan ts = begin.Subtract(end).Duration();
timeLength = Convert.ToString(ts.Hours * 60 + ts.Minutes);
return timeLength;
}
catch
{
}
return string.Empty;
}
public bool IsToday(string date)
{
//入参
DateTime dt = DateTime.Parse(date);
//当前日期
DateTime today = DateTime.Today;
DateTime tempToday = new DateTime(dt.Year, dt.Month, dt.Day);
if (today != tempToday) return false;
return true;
//if (input.Date != DateTime.Now.Date)
//{
// //MessageBox.Show("不是当天");
// return false;
//}
//return true;
}
public bool IsToday(DateTime dt)
{
DateTime today = DateTime.Today;
DateTime tempToday = new DateTime(dt.Year, dt.Month, dt.Day);
if (today != tempToday) return false;
return true;
}
}
}
标签：DateTimeHelper,return,string,TimeSpan,DateTime,date,public From： https://www.cnblogs.com/YYkun/p/16836995.html