using System;
namespace DotNet.Utilities
{
/// <summary>
/// 时间类
/// 1、SecondToMinute(int Second) 把秒转换成分钟
/// </summary>
public class TimeHelper
{
/// <summary>
/// 将时间格式化成 年月日 的形式,如果时间为null，返回当前系统时间
/// </summary>
/// <param name="dt">年月日分隔符</param>
/// <param name="Separator"></param>
/// <returns></returns>
public string GetFormatDate(DateTime dt, char Separator)
{
if (dt != null && !dt.Equals(DBNull.Value))
{
string tem = string.Format("yyyy{0}MM{1}dd", Separator, Separator);
return dt.ToString(tem);
}
else
{
return GetFormatDate(DateTime.Now, Separator);
}
}
/// <summary>
/// 将时间格式化成 时分秒 的形式,如果时间为null，返回当前系统时间
/// </summary>
/// <param name="dt"></param>
/// <param name="Separator"></param>
/// <returns></returns>
public string GetFormatTime(DateTime dt, char Separator) {
if (dt != null && !dt.Equals(DBNull.Value))
{
string tem = string.Format("hh{0}mm{1}ss", Separator, Separator);
return dt.ToString(tem);
}
else
{
return GetFormatDate(DateTime.Now, Separator);
}
}
/// <summary>
/// 把秒转换成分钟
/// </summary>
/// <returns></returns>
public static int SecondToMinute(int Second)
{
decimal mm = (decimal)((decimal)Second / (decimal)60);
return Convert.ToInt32(Math.Ceiling(mm));
}
#region 返回某年某月最后一天
/// <summary>
/// 返回某年某月最后一天
/// </summary>
/// <param name="year">年份</param>
/// <param name="month">月份</param>
/// <returns>日</returns>
public static int GetMonthLastDate(int year, int month)
{
DateTime lastDay = new DateTime(year, month, new System.Globalization.GregorianCalendar().GetDaysInMonth(year, month));
int Day = lastDay.Day;
return Day;
}
#endregion
#region 返回时间差
public static string DateDiff(DateTime DateTime1, DateTime DateTime2)
{
string dateDiff = null;
try
{
//TimeSpan ts1 = new TimeSpan(DateTime1.Ticks);
//TimeSpan ts2 = new TimeSpan(DateTime2.Ticks);
//TimeSpan ts = ts1.Subtract(ts2).Duration();
TimeSpan ts = DateTime2 - DateTime1;
if (ts.Days >= 1)
{
dateDiff = DateTime1.Month.ToString() + "月" + DateTime1.Day.ToString() + "日";
}
else
{
if (ts.Hours > 1)
{
dateDiff = ts.Hours.ToString() + "小时前";
}
else
{
dateDiff = ts.Minutes.ToString() + "分钟前";
}
}
}
catch
{ }
return dateDiff;
}
#endregion
#region 获得两个日期的间隔
/// <summary>
/// 获得两个日期的间隔
/// </summary>
/// <param name="DateTime1">日期一。</param>
/// <param name="DateTime2">日期二。</param>
/// <returns>日期间隔TimeSpan。</returns>
public static TimeSpan DateDiff2(DateTime DateTime1, DateTime DateTime2)
{
TimeSpan ts1 = new TimeSpan(DateTime1.Ticks);
TimeSpan ts2 = new TimeSpan(DateTime2.Ticks);
TimeSpan ts = ts1.Subtract(ts2).Duration();
return ts;
}
#endregion
#region 格式化日期时间
/// <summary>
/// 格式化日期时间
/// </summary>
/// <param name="dateTime1">日期时间</param>
/// <param name="dateMode">显示模式</param>
/// <returns>0-9种模式的日期</returns>
public static string FormatDate(DateTime dateTime1, string dateMode)
{
switch (dateMode)
{
case "0":
return dateTime1.ToString("yyyy-MM-dd");
case "1":
return dateTime1.ToString("yyyy-MM-dd HH:mm:ss");
case "2":
return dateTime1.ToString("yyyy/MM/dd");
case "3":
return dateTime1.ToString("yyyy年MM月dd日");
case "4":
return dateTime1.ToString("MM-dd");
case "5":
return dateTime1.ToString("MM/dd");
case "6":
return dateTime1.ToString("MM月dd日");
case "7":
return dateTime1.ToString("yyyy-MM");
case "8":
return dateTime1.ToString("yyyy/MM");
case "9":
return dateTime1.ToString("yyyy年MM月");
default:
return dateTime1.ToString();
}
}
#endregion
#region 得到随机日期
/// <summary>
/// 得到随机日期
/// </summary>
/// <param name="time1">起始日期</param>
/// <param name="time2">结束日期</param>
/// <returns>间隔日期之间的 随机日期</returns>
public static DateTime GetRandomTime(DateTime time1, DateTime time2)
{
Random random = new Random();
DateTime minTime = new DateTime();
DateTime maxTime = new DateTime();
System.TimeSpan ts = new System.TimeSpan(time1.Ticks - time2.Ticks);
// 获取两个时间相隔的秒数
double dTotalSecontds = ts.TotalSeconds;
int iTotalSecontds = 0;
if (dTotalSecontds > System.Int32.MaxValue)
{
iTotalSecontds = System.Int32.MaxValue;
}
else if (dTotalSecontds < System.Int32.MinValue)
{
iTotalSecontds = System.Int32.MinValue;
}
else
{
iTotalSecontds = (int)dTotalSecontds;
}
if (iTotalSecontds > 0)
{
minTime = time2;
maxTime = time1;
}
else if (iTotalSecontds < 0)
{
minTime = time1;
maxTime = time2;
}
else
{
return time1;
}
int maxValue = iTotalSecontds;
if (iTotalSecontds <= System.Int32.MinValue)
maxValue = System.Int32.MinValue + 1;
int i = random.Next(System.Math.Abs(maxValue));
return minTime.AddSeconds(i);
}
#endregion
}
}