| | 1 | | using System; |
| | 2 | | using System.Globalization; |
| | 3 | |
|
| | 4 | | namespace FakeXrmEasy.Extensions |
| | 5 | | { |
| | 6 | | public static class DateTimeExtensions |
| | 7 | | { |
| | 8 | | public static DateTime ToDayOfWeek(this DateTime dateTime, Int32 week, DayOfWeek dayOfWeek) |
| 36 | 9 | | { |
| 36 | 10 | | DateTime startOfYear = dateTime.AddDays(1 - dateTime.DayOfYear); |
| 36 | 11 | | return startOfYear.AddDays(7 * (week - 2) + ((dayOfWeek - startOfYear.DayOfWeek + 7) % 7)); |
| 36 | 12 | | } |
| | 13 | |
|
| | 14 | | public static DateTime ToDayOfDeltaWeek(this DateTime dateTime, Int32 deltaWeek, DayOfWeek dayOfWeek) |
| 36 | 15 | | => dateTime.ToDayOfWeek(CultureInfo.CurrentCulture.Calendar.GetWeekOfYear(dateTime |
| 36 | 16 | | , CultureInfo.CurrentCulture.DateTimeFormat.CalendarWeekRule |
| 36 | 17 | | , CultureInfo.CurrentCulture.DateTimeFormat.FirstDayOfWeek) + deltaWeek, dayOfWeek); |
| | 18 | |
|
| | 19 | | public static DateTime ToLastDayOfDeltaWeek(this DateTime dateTime, Int32 deltaWeek = 0) |
| 18 | 20 | | => dateTime.ToDayOfDeltaWeek(deltaWeek, CultureInfo.CurrentCulture.DateTimeFormat.FirstDayOfWeek).AddDays(6) |
| | 21 | |
|
| | 22 | | public static DateTime ToFirstDayOfDeltaWeek(this DateTime dateTime, Int32 deltaWeek = 0) |
| 18 | 23 | | => dateTime.ToDayOfDeltaWeek(deltaWeek, CultureInfo.CurrentCulture.DateTimeFormat.FirstDayOfWeek); |
| | 24 | |
|
| | 25 | | public static DateTime ToFirstDayOfMonth(this DateTime dateTime, Int32 month) |
| 0 | 26 | | => dateTime.AddDays(1 - dateTime.Day).AddMonths(month - dateTime.Month); |
| | 27 | |
|
| | 28 | | public static DateTime ToFirstDayOfMonth(this DateTime dateTime) |
| 0 | 29 | | => dateTime.ToFirstDayOfMonth(dateTime.Month); |
| | 30 | |
|
| | 31 | | public static DateTime ToLastDayOfMonth(this DateTime dateTime, Int32 month) |
| 0 | 32 | | { |
| 0 | 33 | | Int32 addYears = month > 12 ? month % 12 : 0; |
| 0 | 34 | | month = month - 12 * addYears; |
| 0 | 35 | | return dateTime |
| 0 | 36 | | .AddDays(CultureInfo.CurrentCulture.Calendar.GetDaysInMonth(dateTime.Year + addYears, month) - dateTime. |
| 0 | 37 | | .AddMonths(month - dateTime.Month).AddYears(addYears); |
| 0 | 38 | | } |
| | 39 | |
|
| | 40 | | public static DateTime ToLastDayOfMonth(this DateTime dateTime) |
| 0 | 41 | | => dateTime.ToLastDayOfMonth(dateTime.Month); |
| | 42 | | } |
| | 43 | | } |