How to sort array by enum value

Question

I have an array and one of its elements uses enum. I want to sort the array by enum.

public enum EnumList
    {
        Spring,
        Summer,
        Fall,
        Winter,
        Unknown
    };

My array looks like this:

 Class1[] arr = new class1[7];

        arr[0] = new class1(101, "Some string", Class1.EnumList.Spring, 100, DateTime.Parse("10/13/2008"));
 .
 .
 array continues..

How do I sort by enum value?

Joelius · Accepted Answer · 2019-06-01 15:36:03Z

3

You can use IEnumerable.OrderBy.

If you sort by an enum-value it will look at the underlying type (usually int) and sort by that. This means the best solution would just be like this:
arr.OrderBy(c => c.TheEnumProperty);

This method will return a sorted IEnumerable which you can cast back to an array with IEnumerable.ToArray.

edited Jun 1, 2019 at 15:36

answered Jun 1, 2019 at 15:23

Joelius

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Comments

Shad · Accepted Answer · 2019-06-01 15:28:32Z

0

Something like

var sortedByEnum = arr.GroupBy(x => x.enum).OrderBy(group => group);

edited Jun 1, 2019 at 15:28

answered Jun 1, 2019 at 15:24

Shad

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2 Comments

Olivier Jacot-Descombes Over a year ago

You can indent the code by 4 spaces to have it formatted as code.

Shad Over a year ago

yes sorry, maybe you can make the edit request again

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