如何在C#中打印html

在C#中打印HTML，可以使用以下方法：

使用HttpClient发送HTTP请求

using System.Net.Http;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        using var client = new HttpClient();
        var response = await client.GetAsync("https://www.example.com");
        var content = await response.Content.ReadAsStringAsync();
        Console.WriteLine(content);
    }
}

使用WebClient发送HTTP请求

using System.Net;

class Program
{
    static void Main(string[] args)
    {
        using var client = new WebClient();
        var content = client.DownloadString("https://www.example.com");
        Console.WriteLine(content);
    }
}

使用HtmlWeb类

using HtmlAgilityPack;

class Program
{
    static void Main(string[] args)
    {
        var web = new HtmlWeb();
        var htmlDoc = web.Load("https://www.example.com");
        Console.WriteLine(htmlDoc.DocumentNode.OuterHtml);
    }
}

使用HttpListener

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

class Program
{
    static void Main(string[] args)
    {
        using var listener = new HttpListener();
        listener.Prefixes.Add("http://localhost:8080/");
        listener.Start();
        Console.WriteLine("Listening...");

        while (true)
        {
            var context = listener.GetContext();
            var response = context.Response;
            var html = "<html><body><h1>Hello, World!</h1></body></html>";
            var buffer = Encoding.UTF8.GetBytes(html);
            response.ContentLength64 = buffer.Length;
            response.ContentType = "text/html";
            response.OutputStream.Write(buffer, 0, buffer.Length);
            response.OutputStream.Close();
        }
    }
}

以上是在C#中打印HTML的常见方法，可以根据实际需求选择合适的方法。