string json=“[{“name”:”zhangsan”,”age”:”12”},{“name”:”zhangsan”,”age”:”12”}]”

方法1：

JArray arr = (JArray)JsonConvert.DeserializeObject(json);

JObject obj = (JObject)arr[1];

Console.WriteLine(obj["name"]);

Console.WriteLine(arr[1]["name"]);

方法2

一个对象

public class Student

{

}

List<Student> students = JsonConvert.DeserializeObject<List<Student>>(json);

foreach (Student model in students)
{
             //dosomething

}

Newtonsoft 反序列化字符串