https://www.newtonsoft.com/json/help/html/DataContractAndDataMember.htm

如果class使用了DataContract，name没有使用DataMember的property就不解析

[DataContract]public class File{ // excluded from serialization // does not have DataMemberAttribute public Guid Id { get; set; } [DataMember] public string Name { get; set; } [DataMember] public int Size { get; set; }}File file = new File{ Id = Guid.NewGuid(), Name = "ImportantLegalDocuments.docx", Size = 50 * 1024};string json = JsonConvert.SerializeObject(file, Formatting.Indented);Console.WriteLine(json);// {// "Name": "ImportantLegalDocuments.docx",// "Size": 51200// }