来自具有凭据的C#控制台应用程序的Web调用

using System;
using System.Net.Http;
using System.Net.Http.Headers;

class Program
{
    static async System.Threading.Tasks.Task Main(string[] args)
    {
        // 创建HttpClient实例
        HttpClient client = new HttpClient();

        // 设置请求的基本地址
        client.BaseAddress = new Uri("https://api.example.com/");

        // 设置凭据（示例为使用Basic Authentication）
        string username = "your_username";
        string password = "your_password";
        string credentials = Convert.ToBase64String(System.Text.Encoding.ASCII.GetBytes($"{username}:{password}"));
        client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", credentials);

        try
        {
            // 发送GET请求并获取响应
            HttpResponseMessage response = await client.GetAsync("api/resource");

            // 检查响应是否成功
            if (response.IsSuccessStatusCode)
            {
                // 处理响应数据
                string responseData = await response.Content.ReadAsStringAsync();
                Console.WriteLine(responseData);
            }
            else
            {
                Console.WriteLine("请求失败：" + response.StatusCode);
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine("发生异常：" + ex.Message);
        }
    }
}