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Given a string with the day of the week, we return an integer

Is there a way to have something like:

string day = "Sunday";
int num = getDayOfWeek(day); //returns 0

I understand that we could do something like this and I wanted to reverse:

int num = 0;

//returns "Sunday"
return System.Globalization.CultureInfo.CurrentCulture.DateTimeFormat.DayNames[(int)num];

The easiest way is to implement a dictionary that does what I ask, but I'm wondering if there is something in C#

DateTime

that already does this for me.

EDIT:

As Jon Skeet noted, it would be ideal if the answer supported different cultural days (eg "Sunday" in English, "Segunda" in Portuguese).

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2 answers 


var inx = Array.FindIndex(CultureInfo.CurrentCulture.DateTimeFormat.DayNames, x=>x=="Sunday");


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You can do the following:

string myDay = "Tuesday";
int dayNumber = ((int)Enum.Parse(typeof(DayOfWeek), myDay)); // dayNumber = 2


Every day of the week is mapped to the following number:

- Sunday = 0
- Monday = 1
- Tuesday = 2
- Wednesday = 3
- Thursday = 4
- Friday = 5
- Saturday = 6
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