{
"类目编码":{
"考研": "50504005",
"四六级": "50000093",
"高考": "50000084",
"书籍": "33",
"执业医师": "50004542",
"法考": "50004821",
"专四专八": "50004598",
"公务员": "50000104"
},
"类目名称":"",
"时间段类型":"",
"自定义日期":"",
"等待时间":3000,
"开始日期":"",
"结束日期":"",
}
$= {类目编码}.Keys.ToList(); 这样写报错,这里该咋写,求大佬解答