C#从站点下载的JSON文本中获取单个数据

using System;
using System.Net.Http;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        using (HttpClient client = new HttpClient())
        {
            string url = "http://example.com/api/data"; // 替换为实际的API URL
            HttpResponseMessage response = await client.GetAsync(url);
            if (response.IsSuccessStatusCode)
            {
                string json = await response.Content.ReadAsStringAsync();
                // 在这里处理JSON数据
            }
            else
            {
                Console.WriteLine("请求失败: " + response.StatusCode);
            }
        }
    }
}

using Newtonsoft.Json;
using System;

class Program
{
    static void Main(string[] args)
    {
        string json = "{ \"name\": \"John\", \"age\": 30 }"; // 替换为实际的JSON文本
        dynamic data = JsonConvert.DeserializeObject(json);
        
        string name = data.name; // 获取名为"name"的数据
        int age = data.age; // 获取名为"age"的数据
        
        Console.WriteLine("Name: " + name);
        Console.WriteLine("Age: " + age);
    }
}

Install-Package Newtonsoft.Json