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420 lines
9.0 KiB
420 lines
9.0 KiB
/*******************************************************/
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/*Project:基础类库
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Module :时间函数库
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Description :
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Date : 2008-6-3 15:09:12
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Create : Lxc
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Update : 2015-12-31
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TODO : */
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/*******************************************************/
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namespace System
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{
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/// <summary>
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/// 日期时间操作单元
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/// </summary>
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public partial class DateUnit
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{
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/// <summary>
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/// 1970-1-1
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/// </summary>
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public static DateTime InitDate()
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{
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return new DateTime(1970, 1, 1);
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}
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/// <summary>
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/// 默认当前日期
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/// </summary>
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public static DateTime DefDate()
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{
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return DateTime.Now;
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}
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/// <summary>
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/// 格式化后的当前日期
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/// </summary>
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public static string DefFormatDate()
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{
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return FormatDate(DefDate());
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}
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/// <summary>
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///格式化当前时间
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/// </summary>
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public static string DefFormatDateTime()
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{
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return FormatDateTime(DefDate());
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}
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/// <summary>
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/// 格式化后的 当前月1号 日期格式yyyy-MM-01
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/// </summary>
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public static string DefMonthBegFormat()
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{
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return DefDate().ToString("yyyy-MM-01");
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}
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/// <summary>
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/// 字符串格式->格式化为当前日期
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/// </summary>
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/// <param name="Indate"></param>
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/// <returns></returns>
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public static string FormatDate(string Indate)
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{
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DateTime nowDate = DefDate();
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if (Indate != null && Indate != "")
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{
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nowDate = ToDate(Indate);
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}
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return FormatDate(nowDate);
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}
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/// <summary>
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/// 格式化为 日期格式yyyy-MM-dd
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/// </summary>
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/// <param name="Indate"></param>
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/// <returns></returns>
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public static string FormatDate(DateTime Indate)
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{
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if (!Indate.Equals(null))
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{
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return Indate.ToString("yyyy-MM-dd");
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}
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else
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{
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return DefFormatDate();
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}
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}
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/// <summary>
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/// 格式化为 日期时间格式yyyy-MM-dd HH:mm:ss
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/// </summary>
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/// <param name="Indate"></param>
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/// <returns></returns>
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public static string FormatDateTime(DateTime Indate)
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{
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if (!Indate.Equals(null))
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{
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return Indate.ToString("yyyy-MM-dd HH:mm:ss");
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}
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else
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{
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return DefFormatDate();
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}
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}
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/// <summary>
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/// 格式化时间 毫秒
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/// </summary>
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/// <param name="Indate"></param>
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/// <returns></returns>
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public static string FormatDateTimefff(DateTime Indate)
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{
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if (!Indate.Equals(null))
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{
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return Indate.ToString("yyyy-MM-dd HH:mm:ss fff");
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}
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else
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{
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return DefFormatDate();
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}
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}
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#region 时间函数
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/// <summary>
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/// 是不是时间格式
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/// </summary>
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/// <param name="datetm"></param>
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/// <returns></returns>
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public static bool IsDate(string datetm)
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{
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bool result = false;
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try
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{
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DateTime dateTime = Convert.ToDateTime(datetm);
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result = true;
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}
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catch
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{
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result = false;
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}
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return result;
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}
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/// <summary>
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/// 将字符串转化成日期，如果输入的字符串不是日期时，则返回1970-1-1
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/// </summary>
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/// <param name="str"></param>
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/// <returns></returns>
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public static DateTime ToDate(string str)
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{
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if (str == null || str == "")
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return DefDate();
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else
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{
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DateTime dt = DefDate();
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if (DateTime.TryParse(str, out dt) == false)
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return DefDate();
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else
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return dt;
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}
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}
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/// <summary>
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/// 将对象转化成日期，如果输入的对象不是日期时，则返回1970-1-1
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/// </summary>
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/// <param name="obj"></param>
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/// <returns></returns>
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public static DateTime ToDate(object obj)
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{
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DateTime Result = DefDate();
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if (!obj.Equals(null))
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{
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try
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{
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Result = (DateTime)obj;
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}
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catch (Exception ex)
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{
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return DefDate();
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}
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//if (DateTime.TryParse(obj.ToString(), out Result) == false)
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// return DefDate;
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}
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return Result;
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}
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/// <summary>
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/// 将对象转化成日期，如果输入的对象不是日期时，则返回1900-1-1
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/// </summary>
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/// <param name="obj"></param>
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/// <returns></returns>
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public static DateTime ToDate(System.Nullable<System.DateTime> obj)
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{
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if (!obj.Equals(null))
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{
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return (DateTime)obj;
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}
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else
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{
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return DefDate();
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}
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}
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/// <summary>
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/// 20070101-->2007-01-01
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/// </summary>
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/// <param name="Str"></param>
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/// <returns></returns>
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public static string StrTodate(string Str)
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{
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string stryear, strmon, strday;
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try
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{
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stryear = Str.Remove(4, 4);
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Str = Str.Remove(0, 4);
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strmon = Str.Remove(2, 2);
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strday = Str.Remove(0, 2);
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stryear = stryear + "-" + strmon + "-" + strday;
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return stryear;
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}
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catch
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{
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return DefFormatDate();
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}
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}
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#endregion 时间函数
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#region 周计算
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/// <summary>
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/// 周几
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/// </summary>
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/// <param name="curDay"></param>
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/// <returns></returns>
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public static string DayOfWeek(DateTime curDay)
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{
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string[] weekdays = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
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string week = weekdays[Convert.ToInt32(curDay.DayOfWeek)];
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return week;
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}
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/// <summary>
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/// 第几周
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/// </summary>
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/// <param name="curDay"></param>
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/// <returns></returns>
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public static int WeekOfYear(DateTime curDay)
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{
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int firstdayofweek = Convert.ToInt32(Convert.ToDateTime(curDay.Year.ToString() + "-" + "1-1").DayOfWeek);
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int days = curDay.DayOfYear;
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int daysOutOneWeek = days - (7 - firstdayofweek);
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if (daysOutOneWeek <= 0)
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{
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return 1;
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}
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else
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{
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int weeks = daysOutOneWeek / 7;
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if (daysOutOneWeek % 7 != 0)
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weeks++;
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return weeks + 1;
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}
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}
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#region 返回某年某月最后一天
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/// <summary>
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/// 返回某年某月最后一天
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/// </summary>
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/// <param name="year">年份</param>
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/// <param name="month">月份</param>
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/// <returns>日</returns>
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public static int GetMonthLastDate(int year, int month)
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{
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DateTime lastDay = new DateTime(year, month, new System.Globalization.GregorianCalendar().GetDaysInMonth(year, month));
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int Day = lastDay.Day;
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return Day;
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}
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#endregion 返回某年某月最后一天
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#endregion 周计算
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#region 返回时间差
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/// <summary>
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/// 返回时间差 秒
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/// </summary>
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/// <param name="begDateTime"></param>
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/// <param name="endDateTime"></param>
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/// <returns></returns>
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public static double DateDiffSeconds(DateTime begDateTime, DateTime endDateTime)
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{
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try
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{
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TimeSpan ts = endDateTime - begDateTime;
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return ts.TotalSeconds;
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}
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catch (Exception)
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{
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return 0;
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}
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}
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/// <summary>
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/// 返回时间差 分钟
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/// </summary>
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/// <param name="begDateTime"></param>
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/// <param name="endDateTime"></param>
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/// <returns></returns>
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public static double DateDiffMinutes(DateTime begDateTime, DateTime endDateTime)
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{
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try
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{
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TimeSpan ts = endDateTime - begDateTime;
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return ts.TotalMinutes;
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}
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catch (Exception)
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{
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return 0;
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}
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}
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public static double DateDiffHours(DateTime begDateTime, DateTime endDateTime)
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{
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try
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{
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TimeSpan ts = endDateTime - begDateTime;
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return ts.TotalHours;
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}
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catch (Exception)
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{
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return 0;
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}
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}
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public static double DateDifDays(DateTime begDateTime, DateTime endDateTime)
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{
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try
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{
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TimeSpan ts = endDateTime - begDateTime;
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return ts.TotalDays;
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}
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catch (Exception)
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{
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return 0;
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}
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}
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#endregion 返回时间差
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/// <summary>
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/// Unix时间戳
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/// </summary>
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/// <returns>毫秒</returns>
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public static long UnixTime()
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{
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System.DateTime time = DateTime.Now;
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System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1, 0, 0, 0, 0));
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long t = (time.Ticks - startTime.Ticks) / 10000; //除10000调整为13位
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return t;
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}
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/// <summary>
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/// 将c# DateTime时间格式转换为Unix时间戳格式
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/// </summary>
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/// <param name="time">时间</param>
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/// <returns> 毫秒</returns>
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public static long DateTimeToUnixTime(System.DateTime time)
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{
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System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1, 0, 0, 0, 0));
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long t = (time.Ticks - startTime.Ticks) / 10000; //除10000调整为13位
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return t;
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}
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/// <summary>
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/// 时间戳转为C#格式时间
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/// </summary>
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/// <param name="timeStamp"></param>
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/// <returns></returns>
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public static DateTime UnixTimeToDateTime(long timeStamp)
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{
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DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
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long lTime = timeStamp * 10000;
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TimeSpan toNow = new TimeSpan(lTime);
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return dtStart.Add(toNow);
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}
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/// <summary>
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/// Unix时间戳 时间格式化 为日期
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/// </summary>
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/// <param name="timeStamp"></param>
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/// <returns></returns>
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public static string FormatDateUnixTime(long timeStamp)
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{
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DateTime dtStart = UnixTimeToDateTime(timeStamp);
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return FormatDate(dtStart);
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}
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/// <summary>
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/// Unix时间戳 时间格式化 为时间
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/// </summary>
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/// <param name="timeStamp"></param>
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/// <returns></returns>
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public static string FormatDateTimeUnixTime(long timeStamp)
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{
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DateTime dtStart = UnixTimeToDateTime(timeStamp);
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return FormatDateTime(dtStart);
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}
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}
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}
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