如何将LINQ的OrderBy方向指定为布尔值？

using System;
using System.Linq;

class Program
{
    static void Main()
    {
        var numbers = new[] { 1, 2, 3, 4, 5 };

        var sortedNumbers = numbers.OrderBy(n => n, new CustomComparer(true));

        foreach (var number in sortedNumbers)
        {
            Console.WriteLine(number);
        }
    }
}

class CustomComparer : IComparer<int>
{
    private readonly bool _isAscending;

    public CustomComparer(bool isAscending)
    {
        _isAscending = isAscending;
    }

    public int Compare(int x, int y)
    {
        if (_isAscending)
        {
            return x.CompareTo(y);
        }
        else
        {
            return y.CompareTo(x);
        }
    }
}