如何在C#中生成GET和POST方法

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

public class Program
{
    public 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地址

            HttpResponseMessage response = await client.GetAsync(url);

            if (response.IsSuccessStatusCode)
            {
                string result = await response.Content.ReadAsStringAsync();
                Console.WriteLine(result);
            }
            else
            {
                Console.WriteLine("请求失败：" + response.StatusCode);
            }
        }
    }
}

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

public class Program
{
    public 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地址

            // 构造要发送的数据
            var data = new { Name = "John", Age = 30 };
            string json = Newtonsoft.Json.JsonConvert.SerializeObject(data);
            var content = new StringContent(json, Encoding.UTF8, "application/json");

            HttpResponseMessage response = await client.PostAsync(url, content);

            if (response.IsSuccessStatusCode)
            {
                string result = await response.Content.ReadAsStringAsync();
                Console.WriteLine(result);
            }
            else
            {
                Console.WriteLine("请求失败：" + response.StatusCode);
            }
        }
    }
}