• 如果class使用了DataContract，name没有使用DataMember的property就不解析
• DataContract with Json.Net

[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
// }