C# LIST SORT

            List<Avatar> checklist = setting.avatarList;
            checklist.Sort(delegate (Avatar a, Avatar b)
            {
                int xdiff = a.x.CompareTo(b.x);
                if (xdiff != 0) return xdiff;
                else return a.y.CompareTo(b.y);
            });

//--------------------------------------

public class Avatar  {

    public float x;
    public float y;
    public string name;
    public bool isBlue;

    public Avatar(float _x, float _y, string _name, bool _isBlue)
    {
        x = _x;
        y = _y;
        name = _name;
        isBlue = _isBlue;
    }
}