如何序列化具有自定义IComparer的SortedDictionaty

如何解决如何序列化具有自定义IComparer的SortedDictionaty

目标很简单。按DESC键指定字典的序列化顺序。

[HttpGet]
[Route("")]
public IActionResult test()
{
    var dic = new SortedDictionary<int,string>(new DescComparer<int>())
        {{1,"A"},{3,"C"},{4,"D"},{2,"B"}};
    return Ok(dic);
}

class DescComparer<T> : IComparer<T>
{
    private readonly IComparer<T> _defaultComparer = Comparer<T>.Default;
    public int Compare([AllowNull] T x,[AllowNull] T y)
    {
        return _defaultComparer.Compare(y,x);
    }
}

结果是：

{
    "1":"A","2":"B","3":"C","4":"D"
}

我想要的是：

{
    "4":"D","1":"A"
}

有人可以帮我吗？

解决方法

尝试一下：

class DescComparer<T> : IComparer<T> where T : IComparable<T>
{
    //private readonly IComparer<T> _defaultComparer = Comparer<T>.Default;
    public int Compare(T x,T y)
    {
        return y.CompareTo(x);
    }
}

结果：