using System;
using System.Net.Http;

class Program
{
    static async Task Main()
    {
        // Create an instance of HttpClient
        HttpClient httpClient = new HttpClient();

        // Set custom User Agent
        string customUserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36";
        httpClient.DefaultRequestHeaders.Add("User-Agent", customUserAgent);

        // Make a GET request to httpbin.io/user-agent
        HttpResponseMessage response = await httpClient.GetAsync("https://httpbin.io/user-agent");

        // Read and print the content
        string content = await response.Content.ReadAsStringAsync();
        Console.WriteLine(content);
    }
}