Get the Day of a week from integer value of the Day

Question

I have converted several days of the week to their respective integer values..

For example: Tuesday, Thursday, Friday As 2,4,5

Now I need to get back to the days from the integers.

Simply the inverse of what i had done.

Inverse of the Question: Get Integer value of day of week

Is there a simple standard way for getting day of week from integer value in C# or else I will have to perform a manual calculation with a Method?

you mean if user enters 5 it should return Friday right? – Neel Aug 21 '14 at 05:56 — Neel, Aug 21 '14 at 05:56

Neel · Accepted Answer · 2014-08-21T06:07:04.273

45

try below code :-

Response.Write(Enum.GetName(typeof(DayOfWeek),5));

Output:

Friday

and If you have to convert integers to days of week, see following sample to convert “2,4,5″ using LINQ.

var t = string.Join(",",
                 from g in "2,4,5".Split(new char[] { ',' })
                 select Enum.GetName(typeof(DayOfWeek), Convert.ToInt32(g)));
        Response.Write(t);

Output:

Tuesday,Thursday,Friday

For extra informations :-

http://msdn.microsoft.com/en-us/library/system.enum.getname(v=vs.110).aspx

edited Aug 21 '14 at 06:07

answered Aug 21 '14 at 06:02

Neel

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1

Thank you so much for the response, also for the additional LINQ type conversion. – parkourkarthik Aug 22 '14 at 06:59

score 23 · Answer 2 · answered Aug 21 '14 at 06:01

23

Try

CultureInfo.CurrentCulture.DateTimeFormat.DayNames[day No]

answered Aug 21 '14 at 06:01

Gumzle

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what if he wants for multiple numbers like 1,2,3? – Neel Aug 21 '14 at 06:14
1

And in case some is looking for abbreviations: CultureInfo.CurrentCulture.DateTimeFormat.AbbreviatedDayNames[day No] – blub Jan 10 '17 at 22:02
Awesome answer, uses Framework BCL rather than needing to code. – Immortal Dec 01 '17 at 00:05

score 9 · Answer 3 · answered Dec 21 '14 at 16:29

9

Adding my answer in case it's any use to anyone:

((DayOfWeek)i).ToString();

Gives 0 = Sunday, 1 = Monday etc

For 0 = Monday just shift along 1

((DayOfWeek)((i + 1) % 7)).ToString();

answered Dec 21 '14 at 16:29

mbdavis

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score 7 · Answer 4 · answered Aug 21 '14 at 06:00

7

Enum.Parse(typeof(DayOfWeek),"0")

where "0" is string equivalent of integer value of day of the week

answered Aug 21 '14 at 06:00

Manas

2,534
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score 2 · Answer 5 · edited Feb 03 '17 at 14:02

2

In DateTime.Now DayOfWeek is an enum value and you can get its string value by parsing it to corresponding values.

Enum.Parse(typeof(DayofWeek),"0")

You will get your desired result then.

edited Feb 03 '17 at 14:02

r0-

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answered Aug 21 '14 at 06:02

Chandra

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9

kidshaw · Answer 6 · 2020-03-11T10:20:15.643

1

string.Format("{0:dddd}", value)

Using enumeration doesn't factor in localisation. This string format should return the full day name as a string localised to local culture.

class Program
{
    static void Main(string[] args)
    {
        var value = DateTime.Today;
        System.Console.WriteLine(string.Format("{0:dddd}", value));
    }
}

Console output on 11th of March 2020, locale en-GB:

Wednesday

edited Mar 11 '20 at 10:20

answered Aug 21 '14 at 06:04

kidshaw

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This returns "dddd" – urza.cc Mar 10 '20 at 19:14
Not on my machine... I have included a sample in the answer – kidshaw Mar 11 '20 at 10:16

Get the Day of a week from integer value of the Day

6 Answers6

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