Web API C#中的POST请求

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

class Program
{
    static async Task Main(string[] args)
    {
        using (HttpClient client = new HttpClient())
        {
            // 构造请求参数
            var data = new { Name = "John", Age = 30 };
            
            // 发送POST请求
            HttpResponseMessage response = await client.PostAsJsonAsync("http://example.com/api/users", data);
            
            // 处理响应
            if (response.IsSuccessStatusCode)
            {
                // 请求成功
                var result = await response.Content.ReadAsStringAsync();
                Console.WriteLine(result);
            }
            else
            {
                // 请求失败
                Console.WriteLine("Error: " + response.StatusCode);
            }
        }
    }
}