Order vs Sort in C#

[ShervanN]

Happy New Year.

What are the differences between Sort and Order in C#? When and Where should we use these?
The result for the below example is the same in Sort and Order.

  var listInt = new List<int> { 5, 8, 9, 17, -6, 55 };
        var stuOrder = listInt.Order();
        listInt.Sort();
        Console.WriteLine(string.Join(',', stuOrder));
        Console.WriteLine(string.Join(',', listInt));

[christiannagel]

Order is a LINQ extension method from the Enumerable class available since .NET 7. Because this method extends IEnumerable<T>, you can use the Order method with any collection class implementing IEnumerable<T>. The Order method returns a new collection and doesn't change the source.

The Sort method is defined with List<T>. This method is optimized for theList<T> type and changes the sort order of the originating collection.

The Array type implements a Sort method as well.

That said, use the Order method with any collection type, when you just have IEnumerable<T> available. If you use the List type sorted, use the Sort method if you want to have the original collection sorted. In case you need this sort order independent of the original collection, use the Order method as well.

[ShervanN]

Thank you