How to sort List<Point>

This question already has an answer here:

How to Sort a List<T> by a property in the object 19 answers

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LINQ：

pointsOfList = pointsOfList.OrderByDescending(p => p.X).ToList();

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pointsOfList.OrderBy(p=>p.x).ThenBy(p=>p.y)

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这个简单的控制台程序可以：

class Program
{
    static void Main(string[] args)
    {    
        List<Points> pointsOfList =  new List<Points>(){
            new Points() { x = 9, y = 3},
            new Points() { x = 4, y = 2},
            new Points() { x = 1, y = 1}
        };

        foreach (var points in pointsOfList.OrderBy(p => p.x))
        {
            Console.WriteLine(points.ToString());
        }

        Console.ReadKey();
    }
}

class Points
{
    public int x { get; set; }
    public int y { get; set; }

    public override string ToString()
    {
        return string.Format("({0}, {1})", x, y);
    }
}

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