using Newtonsoft.Json.Linq;

3、具體代碼：

string students = "{\"grade\":\"6\",\"class\":\"1\",\"students\":[{ \"id\":\"1\",\"name\":\"Lily\",\"sex\":\"女?\"},{\"id\":\"2\",\"name\":\"Jack\",\"sex\":\"男D\"},{\"id\":\"3\",\"name\":\"Lucy\",\"sex\":\"女?\"}]}
 
";
JObject studentsJson = JObject.Parse(students);
//年級
string grade = studentsJson["grade"].ToString();
//獲得第二個學生的姓名
string name1 = studentsJson["students"][1]["name"].ToString();  //Or
name1 = studentsJson["students"].AsEnumerable().ElementAt(1)["name"].ToString();
//遍歷學生信息
var studentsList = studentsJson["
 
students"].AsEnumerable();
foreach (var item in studentsList)
{
    string a = item["name"].ToString();
}
//獲得學生Jack的信息和性別
var Jack = studentsJson["students"].AsEnumerable().Where(t => t.Value<string>("name") == "Jack");
string Jack_sex = Jack.FirstOrDefault()["sex"].ToString();
//獲得女生的信息集合
var
 
 Girls = studentsJson["students"].AsEnumerable().Where(t => t.Value<string>("sex") == "女?");

C#中的各種json取值