C# Sort vs JavaScript Sort

Question

I am having following array as input to sort values in descending order:

var cars = ["8587009748118224023Po","8587009748118224023PP","8587009748118224023P,","8587009748118224023P$","8587009748118224023P<","8587009748118224023P?"]

In C#, I am using OrderByDescending and getting following output

C# code:

var rslt= cars.OrderByDescending(a => a);

Result (commas added after each value):

8587009748118224023PP,
8587009748118224023Po,
8587009748118224023P<,
8587009748118224023P?,
8587009748118224023P,
,
8587009748118224023P$,

In Javascript, I am using sort and reverse and getting following different result

javascript code:

cars.sort();
cars.reverse();

Result:

8587009748118224023Po,
8587009748118224023PP,
8587009748118224023P?,
8587009748118224023P<,
8587009748118224023P,
,
8587009748118224023P$

Can anyone help me how to sort values in C# as like JavaScript?

stackoverflow.com/questions/5430016/…

user93
– user93

2017-08-11 05:13:30 +00:00
Commented Aug 11, 2017 at 5:13 — user93
– user93, Commented Aug 11, 2017 at 5:13

Michael Silver · Accepted Answer · 2017-08-11 05:39:53Z

6

Try changing the StringComparer:

Array.Sort(cars, StringComparer.Ordinal);
Array.Reverse(cars);

answered Aug 11, 2017 at 5:39

Michael Silver

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2 Comments

Kevin Morgan Over a year ago

You are right, the following code gives the correct result in my case in C#. var rslt = cars.OrderByDescending(a => a, StringComparer.Ordinal);

ruffin Over a year ago

And though @Rajesh deleted his answer explaining this, this gives you a hint of how to accomplish the flip side of this too -- if you want JavaScript to sort like C# does by default, you use a sorting algorithm that employs localCompare.

jason.kaisersmith · Accepted Answer · 2017-08-11 05:59:41Z

4

It looks like the Javascript is doing a case insensitive sort. For C# you need to explicitly tell it to do this. So this should work;

var rslt = cars.OrderByDescending(a => a, StringComparer.OrdinalIgnoreCase);

Edit:

After update from OP then he discovered that the ignore case was not required. So the following worked;

var rslt = cars.OrderByDescending(a => a, StringComparer.Ordinal);

edited Aug 11, 2017 at 5:59

answered Aug 11, 2017 at 5:17

jason.kaisersmith

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3 Comments

Kevin Morgan Over a year ago

It gives following different result (not like javascript) 8587009748118224023PP,8587009748118224023Po,8587009748118224023P?,8587009748118224023P<,8587009748118224023P,,8587009748118224023P$

ASDFGerte Over a year ago

If compareFunction is not supplied, elements are sorted by converting them to strings and comparing strings in Unicode code point order

Kevin Morgan Over a year ago

@jason.kaisersmith, your answer gave me the clue and following line gives the exact result in C# as like javascript. var rslt = cars.OrderByDescending(a => a, StringComparer.Ordinal);

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