C#中System.Text.Json匿名对象反序列化

public readonly static string str = """
        {"@odata.context":"http://localhost:9000/api/v1/$metadata#DataDto","value":[{"id":"0b734ed7-2955-4af4-a902-35dc17871094","timestamp":1684839865920},{"id":"7e285d08-cdb3-4209-8335-0ff9b20d39ef","timestamp":1684836312421}]}
        """;
    public class DataDto
    {
        public string? Id { get; set; }
        public long Timestamp { get; set; }
    }

    public class ODataEnumerableResultWrapper<T>
        where T : class
    {
        public IEnumerable<T> Value { get; set; }
    }
	var meta = JsonSerializer.Deserialize<ODataEnumerableResultWrapper<DataDto>>(str);
	var target = meta.Value;

    public static void Main() {
        JsonNode? meta = JsonSerializer.Deserialize<JsonNode>(str);
        //如果直接是简单的对象，而不是数组，可以使用GetValue<T>这种形式。
        var count = meta?["value"]?.Deserialize<IEnumerable<DataDto>>().Count();
        Console.WriteLine(count);
    }
}

dynamic meta = JsonSerializer.Deserialize<dynamic>(str);
Console.WriteLine(meta.GetType());
//OUTPUT: System.Text.Json.JsonElement

        dynamic meta = JsonSerializer.Deserialize<System.Dynamic.ExpandoObject>(str);
        Console.WriteLine(meta.GetType());
        //System.Dynamic.ExpandoObject
        Console.WriteLine(meta.value);
        //[{"id":"0b734ed7-2955-4af4-a902-35dc17871094","timestamp":1684839865920},{"id":"7e285d08-cdb3-4209-8335-0ff9b20d39ef","timestamp":1684836312421}]
        Console.WriteLine(meta.value.GetType());
        //System.Text.Json.JsonElement