使用c#参数和标头的httpparams请求

using System;
using System.Net.Http;

class Program
{
    static async System.Threading.Tasks.Task Main(string[] args)
    {
        using (HttpClient client = new HttpClient())
        {
            // 设置请求参数
            var parameters = new System.Collections.Generic.Dictionary<string, string>
            {
                { "param1", "value1" },
                { "param2", "value2" }
            };
            var encodedParams = new FormUrlEncodedContent(parameters);

            // 设置请求标头
            client.DefaultRequestHeaders.Add("Header1", "Value1");
            client.DefaultRequestHeaders.Add("Header2", "Value2");

            // 发送GET请求
            var response = await client.GetAsync("https://example.com/api", encodedParams);

            // 处理响应
            if (response.IsSuccessStatusCode)
            {
                var content = await response.Content.ReadAsStringAsync();
                Console.WriteLine(content);
            }
            else
            {
                Console.WriteLine("请求失败：" + response.StatusCode);
            }
        }
    }
}