// crudwork // Copyright 2004 by Steve T. Pham (http://www.crudwork.com) // // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with This program. If not, see <http://www.gnu.org/licenses/>. using System; using System.Collections.Generic; using System.Text; namespace crudwork.Utilities { /// <summary> /// Date Utility /// </summary> public class DateUtil { /// <summary> /// Return a unique identifier based on system's full date (yyyymmdd) and time (hhmissms). /// /// Output sample: 2006040212445099 /// </summary> public static string UniqueID { get { DateTime date = DateTime.Now; string uniqueID = String.Format( "{0:0000}{1:00}{2:00}{3:00}{4:00}{5:00}{6:000}", date.Year, date.Month, date.Day, date.Hour, date.Minute, date.Second, date.Millisecond ); return uniqueID; } } } }
Author: coder
Gets the months between.
using System; public class MainClass{ /// <summary> /// Gets the days between. /// </summary> /// <param name="first">The first.</param> /// <param name="last">The last.</param> /// <param name="inclusive">if set to <c>true</c> [inclusive].</param> /// <returns></returns> public static int GetDaysBetween(DateTime first, DateTime last, bool inclusive) { TimeSpan span = last - first; return inclusive ? span.Days + 1 : span.Days; } /// <summary> /// Gets the months between. /// </summary> /// <param name="first">The first.</param> /// <param name="last">The last.</param> /// <param name="inclusive">if set to <c>true</c> [inclusive].</param> /// <returns></returns> public static int GetMonthsBetween(DateTime first, DateTime last, bool inclusive) { int result = GetDaysBetween(first, last, true) / 30; return inclusive ? result + 1 : result; } }
Gets the end of year.
using System; public class MainClass{ /// <summary> /// Gets the end of year. /// </summary> /// <param name="date">The date.</param> /// <returns></returns> public static DateTime GetEndOfYear(DateTime date) { return new DateTime(new DateTime(date.Year + 1, 1, 1).Ticks - 1); } }
Gets the end of quarter.
using System;
public class MainClass{
///
///
/// The date.
///
public static int GetDaysInYear(DateTime date)
{
if (date.Equals(DateTime.MinValue))
{
return -1;
}
DateTime thisYear = new DateTime(date.Year, 1, 1);
DateTime nextYear = new DateTime(date.Year + 1, 1, 1);
return (nextYear – thisYear).Days;
}
///
///
/// The date.
///
public static DateTime GetEndOfQuarter(DateTime date)
{
int daysInYear = GetDaysInYear(date);
double quarter = ((double)date.DayOfYear) / ((double)daysInYear);
if (quarter < 0.25) { return new DateTime(new DateTime(date.Year, 4, 1).Ticks - 1); } else if (quarter < 0.5) { return new DateTime(new DateTime(date.Year, 7, 1).Ticks - 1); } else if (quarter < 0.75) { return new DateTime(new DateTime(date.Year, 10, 1).Ticks - 1); } else { return new DateTime(new DateTime(date.Year + 1, 1, 1).Ticks - 1); } } } [/csharp]
Gets the end of month.
using System; public class MainClass{ /// <summary> /// Gets the end of month. /// </summary> /// <param name="date">The date.</param> /// <returns></returns> public static DateTime GetEndOfMonth(DateTime date) { return new DateTime(new DateTime(date.Year, date.Month + 1, 1).Ticks - 1); } }
Gets the start of month.
using System; public class MainClass{ /// <summary> /// Gets the start of month. /// </summary> /// <param name="date">The date.</param> /// <returns></returns> public static DateTime GetStartOfMonth(DateTime date) { return new DateTime(new DateTime(date.Year, date.Month, 1).Ticks); } }
Gets the end of day.
using System; public class MainClass{ /// <summary> /// Gets the end of day. /// </summary> /// <param name="date">The date.</param> /// <returns></returns> public static DateTime GetEndOfDay(DateTime date) { return new DateTime(date.Ticks - 1); } }