使用C#从网站下载文件

using System;
using System.Net.Http;
using System.IO;

class Program
{
    static void Main(string[] args)
    {
        string url = "https://example.com/file.txt";
        string outputPath = "file.txt";

        using (HttpClient client = new HttpClient())
        {
            using (HttpResponseMessage response = client.GetAsync(url).Result)
            {
                using (Stream stream = response.Content.ReadAsStreamAsync().Result)
                {
                    using (FileStream fileStream = new FileStream(outputPath, FileMode.Create, FileAccess.Write))
                    {
                        stream.CopyTo(fileStream);
                    }
                }
            }
        }
    }
}