Get first three characters from DayOfWeek , Month

Question

I've a datetime:

DateTime dt = new DateTime(2003, 5, 1);
dt.DayOfWeek // returns Thursday

How I can split only first three characters from DayOfWeek e.g. Thu?

https://docs.microsoft.com/en-us/dotnet/standard/base-types/custom-date-and-time-format-strings#the-ddd-custom-format-specifier — Caramiriel, Dec 21 '17 at 14:41
or `dt.ToString("ddd");` if you need I18N and realise that not everyone abbreviates day names to exactly 3 letters long. — Damien_The_Unbeliever, Dec 21 '17 at 14:43

Marc Gravell · Accepted Answer · 2017-12-21T14:45:38.393

9

If you mean for it to work in different cultures, then your best bet is probably:

var abbr = culture.DateTimeFormat.GetAbbreviatedDayName(dayOfWeek);

where culture is a CultureInfo, for example:

var culture = CultureInfo.CurrentCulture;

In English cultures, this is the 3-letter version:

Sun
Mon
Tue
Wed
Thu
Fri
Sat

edited Dec 21 '17 at 14:45

answered Dec 21 '17 at 14:43

Marc Gravell

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what if I do same for month? – stefan Dec 21 '17 at 14:45
5

@Asif.Ali then: `GetAbbreviatedMonthName` – Marc Gravell Dec 21 '17 at 14:45
where should I place if datetime format is `12/21/2017`? – stefan Dec 21 '17 at 15:00
@Asif.Ali what do you mean "where should I place"? you asked specifically for the 3-letter (abbreviated) version of things - the "datetime format" is irrelevant: once parsed, a `DateTime` *does not have* a format; it *does*, however, have a `.Month` and `.DayOfWeek` – Marc Gravell Dec 21 '17 at 15:01

score 2 · Answer 2 · answered Dec 21 '17 at 14:55

Marcs approach is the best here. But if i understand your question in a more general way, how to get the first three letters of an enum-value, you can use string methods if you use enum.ToString:

DateTime dt = new DateTime(2003, 5, 1);
string dow = dt.DayOfWeek.ToString();
dow = dow.Length > 3 ? dow.Remove(3) : dow;

Get first three characters from DayOfWeek , Month

2 Answers2