コード例 #1
0
 public static DateTime AM(this DateTime d)
 {
     Reject24HourTime(d);
     if (d.Hour < 12)
         return d;
     return d.AddHours(-12);
 }
コード例 #2
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ファイル: DateTimeExtensions.cs プロジェクト: cairabbit/daf
 public static DateTime Interval(this DateTime date, DateTimePart? intervalType, int? intervalVal)
 {
     if (intervalType.HasValue && intervalVal.HasValue)
     {
         switch (intervalType.Value)
         {
             case DateTimePart.Year:
                 return date.AddYears(intervalVal.Value);
             case DateTimePart.Month:
                 return date.AddMonths(intervalVal.Value);
             case DateTimePart.Day:
                 return date.AddDays((double)intervalVal.Value);
             case DateTimePart.Hour:
                 return date.AddHours((double)intervalVal.Value);
             case DateTimePart.Munite:
                 return date.AddMinutes((double)intervalVal.Value);
             case DateTimePart.Second:
                 return date.AddSeconds((double)intervalVal.Value);
             case DateTimePart.Week:
                 return date.AddDays((double)intervalVal.Value * 7);
             case DateTimePart.Quarter:
                 return date.AddMonths(intervalVal.Value * 3);
         }
     }
     return date;
 }
コード例 #3
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        public static DateTime AddType(this DateTime instance, TimeUnits type, double increment)
        {
            DateTime result = instance;

            switch (type)
            {
                case TimeUnits.Days:
                    result = instance.AddDays(increment);
                    break;
                case TimeUnits.Months:
                    increment *= DateTime.DaysInMonth(instance.Year, instance.Month);
                    result = instance.AddDays((int)(Math.Floor(increment)));
                    break;
                case TimeUnits.Weeks:

                    result = instance.AddDays(increment * 7);
                    break;
                case TimeUnits.Years:
                    if (DateTime.IsLeapYear(instance.Year))
                        increment *= 366;
                    else
                        increment *= 365;

                    result = instance.AddDays((int)(Math.Floor(increment)));
                    break;
                case TimeUnits.Hours:
                    result = instance.AddHours(increment);
                    break;
            }

            return result;
        }
コード例 #4
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ファイル: DateTimeFu.cs プロジェクト: jheddings/flynn
 ///////////////////////////////////////////////////////////////////////
 public static DateTime NextHour(this DateTime date)
 {
     DateTime next = date.AddHours(1);
     next = next.SetMinute(0);
     next = next.SetSecond(0);
     next = next.SetMillisecond(0);
     return next;
 }
コード例 #5
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 public static DateTime ToChineseTime(this DateTime dt)
 {
     //var cnOffset = TimeZoneInfo.FindSystemTimeZoneById("Asia/Shanghai").BaseUtcOffset;
     //var cnUTC = dt.Add(cnOffset);
     var cnUTC = dt.AddHours(8);
     var cnDT = new DateTime(cnUTC.Year, cnUTC.Month, cnUTC.Day, cnUTC.Hour, cnUTC.Minute, cnUTC.Second, cnUTC.Millisecond, DateTimeKind.Unspecified);
     return cnDT;
 }
コード例 #6
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ファイル: DateTime.cs プロジェクト: keith9820/Groundfloor
        /// <summary>
        /// Return a DateTime value 
        /// </summary>
        /// <param name="dt">the current datetime</param>
        /// <param name="time">the time of day in 24-hour format (i.e. "21:30")</param>
        /// <returns></returns>
        public static DateTime DateFromTimeString(this DateTime dt, string time)
        {
            var parts = time.Split(':');
            DateTime ret = dt.AddHours(parts[0].ToDouble());
            if (parts.Length == 2)
                ret = ret.AddMinutes(parts[1].ToDouble());

            return ret;
        }
コード例 #7
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    public static string ToISO8601(this DateTime dt, double hourShift = 0)
    {
      string retValue = DateTime.UtcNow.ToString("yyyy-MM-ddTHH:mm:ssZ");

      if (dt == null)
        return retValue;

      return dt.AddHours(hourShift).ToString("yyyy-MM-ddTHH:mm:ssZ");
    }
コード例 #8
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ファイル: DateTimeExtension.cs プロジェクト: hbulzy/SYS
        /// <summary>
        /// 转换成用户所在时区的时间
        /// </summary>
        /// <param name="dateTime">待转换日期(UTC时间)</param>
        /// <returns>返回用户所在时区的时间</returns>
        public static DateTime ConvertToUserDate(this DateTime dateTime)
        {
            //User currentUser;
            //DateTime userDate = dt.AddHours(currentUser.Timezone);

            if (dateTime.Kind == DateTimeKind.Local)
                return dateTime;
            else
                return dateTime.AddHours(8);
        }
コード例 #9
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 public static int DateTimeShift(this DateTime dateTime)
 {
     int hour = dateTime.AddHours(-7).Hour;
     if (hour >= 0 & hour < 9)
         return 1;
     if (hour >= 9 & hour < 16)
         return 2;
     if (hour >= 16 & hour < 24)
         return 3;
     return 1;
 }
コード例 #10
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        /// <summary>
        /// Rounds the minute component to the nearest specified time. Defaults to 1 hour
        /// </summary>
        /// <param name="source"></param>
        /// <param name="rounding"></param>
        /// <returns></returns>
        public static DateTime RoundMinutes(this DateTime source, MinuteRounding rounding = MinuteRounding.Hour)
        {
            if (rounding == MinuteRounding.QuarterHour)
                throw new NotImplementedException("Coming soon");

            switch (rounding)
            {
                case MinuteRounding.Hour:
                    if (source.Minute >= 30)
                        return source.AddHours(1).AddMinutes(-source.Minute).TrimSeconds();
                    return source.AddMinutes(-source.Minute).TrimSeconds();
                case MinuteRounding.HalfHour:
                    if (source.Minute < 15)
                        return source.AddMinutes(-source.Minute).TrimSeconds();
                    if (source.Minute >= 15 && source.Minute < 45)
                        return source.AddMinutes(-source.Minute).AddMinutes(30).TrimSeconds();
                    return source.AddHours(1).AddMinutes(-source.Minute).TrimSeconds();
                default:
                    throw new ArgumentOutOfRangeException("rounding");
            }
        }
コード例 #11
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ファイル: Extensions.cs プロジェクト: kLeZ/Gecko
 /// <summary>
 /// Adds a generic AddType to a DateTime object
 /// </summary>
 /// <param name="now"><seealso cref="System.DateTime"/></param>
 /// <param name="adder">Type structure that acts as a switcher for what type of add to perform</param>
 /// <param name="much">How much AddType to add to each element for creating list of data</param>
 /// <returns>A DateTime object with the added AddType amounts</returns>
 public static DateTime Add(this DateTime now, AddType adder, double much)
 {
     DateTime ret = now;
     switch (adder)
     {
         case AddType.Years:
             {
                 ret = now.AddYears((int)much);
                 break;
             }
         case AddType.Months:
             {
                 ret = now.AddMonths((int)much);
                 break;
             }
         case AddType.Days:
             {
                 ret = now.AddDays(much);
                 break;
             }
         case AddType.Hours:
             {
                 ret = now.AddHours(much);
                 break;
             }
         case AddType.Minutes:
             {
                 ret = now.AddMinutes(much);
                 break;
             }
         case AddType.Seconds:
             {
                 ret = now.AddSeconds(much);
                 break;
             }
         case AddType.Milliseconds:
             {
                 ret = now.AddMilliseconds(much);
                 break;
             }
         case AddType.Ticks:
             {
                 ret = now.AddTicks((long)much);
                 break;
             }
     }
     return ret;
 }
コード例 #12
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 public static DateTime SubstractTimeStepUnit(this DateTime dt, TimeStepUnit tstep)
 {
   switch (tstep)
   {
     case TimeStepUnit.Year:
       return dt.AddYears(-1);
     case TimeStepUnit.Month:
       return dt.AddMonths(-1);
     case TimeStepUnit.Day:
       return dt.AddDays(-1);
     case TimeStepUnit.Hour:
       return dt.AddHours(-1);
     case TimeStepUnit.Minute:
       return dt.AddMinutes(-1);
     case TimeStepUnit.Second:
       return dt.AddSeconds(-1);
   }
   return dt;
 }
コード例 #13
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        public static DateTime ToUtc(this DateTime dateTime, TimeZoneInfo timeZoneInfo)
        {
            if (dateTime.Kind == DateTimeKind.Utc)
                return dateTime;

            if (timeZoneInfo == null)
                return dateTime.ToUniversalTime();

            var offSet1 = new DateTimeOffset(dateTime);
            var utcDateTime = dateTime.ToUniversalTime();
            var tzDate = utcDateTime.ToTimeZone(timeZoneInfo);

            var offSet2 = new DateTimeOffset(tzDate);

            var offSet3 = offSet1 - offSet2;
            var date = dateTime.AddHours(offSet3.Hours);

            return date.ToUniversalTime();
        }
コード例 #14
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 /// <summary>
 /// Subtracts given hours from the given DateTime.
 /// </summary>
 /// <param name="date">The given DateTime.</param>
 /// <param name="hours">Number of hours to be subtracted.</param>
 /// <returns>The DateTime after the given hours are subtracted.</returns>
 public static DateTime SubtractHours(this DateTime date, int hours)
 {
     return date.AddHours(hours.Negate());
 }
コード例 #15
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 /// <summary>
 /// Adds one hour to the given DateTime.
 /// </summary>
 /// <param name="date">The given DateTime.</param>
 /// <returns>The DateTime after one hour is added.</returns>
 public static DateTime AddAnHour(this DateTime date)
 {
     return date.AddHours(1);
 }
コード例 #16
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 public static DateTime SubtractHours(this DateTime dateTime, double hours)
 {
     return dateTime.AddHours(-hours);
 }
コード例 #17
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        public static DateTime SubtractHours(this DateTime date, double value) {
            if (value < 0)
                throw new ArgumentException("Value cannot be less than 0.", "value");

            return date.AddHours(value * -1);
        }
コード例 #18
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ファイル: Extensions.cs プロジェクト: cixonline/cixreader
 /// <summary>
 /// Convert a UTC date time to a date time expressed in GMT or BST
 /// </summary>
 /// <param name="dateTime">The date and time in UTC</param>
 /// <returns>The date and time in either GMT or BST</returns>
 public static DateTime UTCToGMTBST(this DateTime dateTime)
 {
     DateTime theDate = dateTime;
     if (TimeZoneInfo.Local.IsDaylightSavingTime(theDate))
     {
         theDate = dateTime.AddHours(1);
     }
     return theDate;
 }
コード例 #19
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 /// <summary>
 /// Returns a DateTime a number of hours in the future. 
 /// </summary>
 /// <param name="self">The DateTime to move</param>
 /// <param name="hours">Number of hours</param>
 public static DateTime HoursSince(this DateTime self, double hours)
 {
     return self.AddHours(hours);
 }
コード例 #20
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        public static DateTime ChangeHour(this DateTime date, int hour) {
            if (hour < 0 || hour > 23)
                throw new ArgumentException("Value must be between 0 and 23.", "hour");

            return date.AddHours(hour - date.Hour);
        }
コード例 #21
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        /// <summary>
        /// Warning: bug found. dt.Offset may be incorrect as offsets could be different if range crosses daylight saving switch, i.e. October - December, or month of November in the EST USA.
        /// </summary>
        /// <param name="dt"></param>
        /// <param name="count"></param>
        /// <param name="unit"></param>
        /// <returns></returns>
        public static DateTimeOffset Add(this DateTimeOffset dt, int count, TimeUnits unit)
        {
            switch(unit)
            {
                case TimeUnits.Century:
                    return dt.AddYears(count*100);
                case TimeUnits.Day:
                    return dt.AddDays(count);
                case TimeUnits.Decade:
                    return dt.AddYears(count*10);
                case TimeUnits.Hour:
                    return dt.AddHours(count);
                case TimeUnits.Minute:
                    return dt.AddMinutes(count);
                case TimeUnits.Month:
                    return dt.AddMonths(count);
                case TimeUnits.Quarter:
                    return dt.AddMonths(count*3);
                case TimeUnits.Second:
                    return dt.AddSeconds(count);
                case TimeUnits.Week:
                    return dt.AddDays(count*7);
                case TimeUnits.Year:
                    return dt.AddYears(count);
            }

            throw new Exception("Adding \"{0}\" is not implemented.".SmartFormat(unit));
        }
コード例 #22
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 public static DateTime ToOffsetDateTime(this DateTime date, double offset)
 {
     if (date.TimeOfDay.TotalSeconds > 0)
         return date.AddHours(offset);
     return date;
 }
コード例 #23
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 public static DateTimeOffset SubtractHours(this DateTimeOffset dateTimeOffset, double hours)
 {
     return dateTimeOffset.AddHours(-hours);
 }
コード例 #24
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 /// <summary>
 /// Return IST time assuming given date is UTC
 /// </summary>
 /// <param name="date">UTC Date</param>
 /// <returns></returns>
 public static DateTime ToIst(this DateTime date)
 {
     return date.AddHours(5).AddMinutes(30);
 }
コード例 #25
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 public static DateTime BeginningOfDay(this DateTime date)
 {
     return date.AddHours(date.Hour * -1).AddMinutes(date.Minute * -1);
 }
コード例 #26
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ファイル: Utilities.cs プロジェクト: nipunbatra/Energy
 public static IEnumerable<DateTime> GetHours(this DateTime date)
 {
     date = date.Date; // truncate hours
     for (int i = 0; i < 24; i++)
     {
         yield return date.AddHours(i);
     }
 }
コード例 #27
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 /// <summary>
 /// Returns a DateTime a number of hours in the past
 /// </summary>
 /// <param name="self">The DateTime to move</param>
 /// <param name="hours">Number of hours</param>
 public static DateTime HoursAgo(this DateTime self, double hours)
 {
     return self.AddHours(-hours);
 }
コード例 #28
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ファイル: DateTimeExt.cs プロジェクト: philfanzhou/Quantum
        /// <summary>
        /// 获取下一个交易分钟
        /// </summary>
        /// <param name="self"></param>
        /// <returns></returns>
        public static DateTime ToNextTradingMinute(this DateTime self)
        {
            if (self.IsTradingDate() == false)
            {
                self = self.ToNextTradingDate();
                return self.AddHours(9).AddMinutes(31);
            }

            DateTime time = self.AddMinutes(1);
            TimeSpan span = time.TimeOfDay;
            if (span < new TimeSpan(9, 31, 0))
            {
                return time.Date.AddHours(9).AddMinutes(31);
            }
            else if (span > new TimeSpan(11, 30, 0)
                && span < new TimeSpan(13, 0, 0))
            {
                return time.Date.AddHours(13).AddMinutes(1);
            }
            else if (span > new TimeSpan(15, 0, 0))
            {
                return time.Date.AddDays(1).ToNextTradingMinute();
            }

            return time;
        }
コード例 #29
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 public static string ToiCalTime(this DateTime dateTime, int timeZoneDifference)
 {
     return dateTime.AddHours(timeZoneDifference).ToString("yyyyMMdd") + "T" + dateTime.AddHours(timeZoneDifference).ToString("HHmmssZ");
 }
コード例 #30
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ファイル: DateTimeFu.cs プロジェクト: jheddings/flynn
        ///////////////////////////////////////////////////////////////////////
        public static DateTime SetHour(this DateTime dt, int hour)
        {
            if ((hour < 0) || (hour > 23)) {
                throw new ArgumentOutOfRangeException("hour");
            }

            int diff = hour - dt.Hour;
            return dt.AddHours(diff);
        }