Comparer not working in OrderB by?

Question

I am trying to sort some strings using entity framework OrderByDescending or OrderBy but some how it is not working, i need to use sort with string comparer.

Here is my Code:

public class MyStringComparer : IComparer<string> 
{
    CultureInfo culture = new System.Globalization.CultureInfo("no");
    public int Compare(string x, string y)
    {
            return string.Compare(x, y, true, culture);
    }
}
class Program
{
    static void Main(string[] args)
    {
        MyStringComparer comparer = new MyStringComparer();
        List<string> name = new List<string> { "åtestå", "aaabc", "åtestå", "Basxas","xxxax" };
        name.OrderByDescending(x => x, comparer);
        name.ForEach( x => {
            Console.WriteLine(x);
        });
        Console.ReadKey();
    }
}

Comparer is never called, what am I missing?

Result should be

aaabc
Basxas
xxxax
åtestå
åtestå

But it is coming as

åtestå
aaabc
åtestå
Basxas
xxxax

If there could be another way to do the same, please suggest.

Answer 1

You might want to read up on LINQ deferred execution.

Replace:

name.OrderByDescending(x=> x, comparer);
name.ForEach(x => { Console.WriteLine(x); });

With:

var ordered = name.OrderByDescending(x=> x, comparer).ToList();
ordered.Foreach(Console.WriteLine);

Explanation:

name.OrderByDescending(x => x, comparer) returns an IEnumerable<String> and the comparer is not utilized until the collection is enumerated. You are however not storing the result of this operation, so it never happens.