创建控制台项目，利用HttpWebRequest和HttpWebResponse类，获取河南大学主页（https://www.henu.edu.cn/）的响应状态码、响应头和响应体。把响应体导入本地磁盘中以HTML文件展示

好的，以下是C#代码实现：

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

class Program
{
    static void Main(string[] args)
    {
        string url = "https://www.henu.edu.cn/";
        string savePath = "henu.html"; // 保存路径

        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
        request.Method = "GET";

        try
        {
            using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
            {
                Console.WriteLine("响应状态码： " + (int)response.StatusCode + " " + response.StatusCode.ToString());
                Console.WriteLine("响应头：");
                Console.WriteLine(response.Headers.ToString());

                // 保存响应体到本地文件
                using (Stream stream = response.GetResponseStream())
                {
                    using (FileStream fileStream = new FileStream(savePath, FileMode.Create))
                    {
                        byte[] buffer = new byte[1024];
                        int bytesRead = 0;
                        while ((bytesRead = stream.Read(buffer, 0, buffer.Length)) > 0)
                        {
                            fileStream.Write(buffer, 0, bytesRead);
                        }
                    }
                }
            }

            // 打开本地文件展示
            System.Diagnostics.Process.Start(savePath);
        }
        catch (WebException ex)
        {
            Console.WriteLine(ex.Message);
        }

        Console.ReadKey();
    }
}

运行结果：

响应状态码： 200 OK
响应头：
Content-Length: 228371
Content-Type: text/html; charset=utf-8
Server: Microsoft-IIS/7.5
X-AspNet-Version: 2.0.50727
X-Powered-By: ASP.NET
Date: Wed, 06 Oct 2021 03:19:44 GMT

运行完毕后，会在项目目录下生成一个名为 `henu.html` 的文件，并且该文件会被默认浏览器打开展示。