老师,我有下面一段json代码{"searchValue":null,"createBy":null,"createTime":null,"updateBy":null,"updateTime":null,"remark":null,"params":{},"undergraduateId":1,"serialNumber":"1","schoolName":"北京大学","schoolCode":"4111010001","competentAuthority":"教育部","provinceCity":"北京市","city":"海淀区","schoolLevel":"本科","schoolNature":"公办","whether985":"985","whether211":"211","firstInstitutions":"A","firstDiscipline":"是","researchQualification":"是","autonomousMarking":"是","typeInstitution":"综合","internetSite":"http://www.pku.edu.cn/","schoolAddress":"燕园校区(校本部):北京市海淀区颐和园路5号\n医学部:北京市海淀区学院路38号\n昌平校区:北京市昌平区十三陵镇西山口村\n大兴校区:北京市大兴工业开发区金苑路24号\n无锡校区:无锡市滨湖区未名路\n深圳研究生院:深圳市南山区丽水路2199号","admissionsOfficePhone":"010-62751407","admissionsOfficeEmail":"bdzsb@pku.edu.cn","reserved1":null,"reserved2":null}
我想提取里面的键值,咱们的Foxtable采用的是第三方库Newtonsoft.JSON。请问有没有相关的命令