问如何将`key`字段的名称修改为字典中key的值

EN

var json = "{\"key\":\"aaaa\",\"value\":123}";
var jObject = JObject.Parse(json);
jObject[jObject["key"]?.ToString() ?? string.Empty] = jObject["value"];
jObject.Remove("key");
jObject.Remove("value");
Console.WriteLine(jObject);

{
  "aaaa": 123
}

var dict = jObject.ToObject<Dictionary<string, int>>();

var json = "{\"key\":\"aaaa\",\"value\":123}";
var dict = JObject.Parse(json).ToObject<Dictionary<string, string>>();

var result = new Dictionary<string, int>();
for (int i = 0; i < dict.Count; i += 2)
{
    var first = dict.ElementAt(i);
    var second = dict.ElementAt(i + 1);

    result.Add(first.Value, int.TryParse(second.Value, out int parsedValue) ? parsedValue : 0);
}

public Dictionary<string, string> ModelToDict<T>(T item)
    {
        Type myObjectType = item.GetType();
        Dictionary<string, string> dict = new Dictionary<string, string>();
        PropertyInfo[] properties = myObjectType.GetProperties();
        foreach (var info in properties)
        {
            string value = (string)info.GetValue(item);
            dict.Add(info.Name, value);//change the order if you like
        }
        return dict;
    }