无法转换类型“字符串”；到“HtmlAgilityPack.HtmlDocument”？

发布于 2024-09-05 06:29:38 字数 664 浏览 4 评论 0原文

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using HtmlAgilityPack;

namespace sss
{
    public class Downloader
    {
        WebClient client = new WebClient();

        public HtmlDocument FindMovie(string Title)
        { 
            //This will be implemented later on, it will search movie.
        }

        public HtmlDocument FindKnownMovie(string ID)
        {
            HtmlDocument Page = (HtmlDocument)client.DownloadString(String.Format("http://www.imdb.com/title/{0}/", ID));
        }
    }
}

如何将下载的字符串转换为有效的 HtmlDocument，以便可以使用 HTMLAgilityPack 对其进行解析？

原文

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using HtmlAgilityPack;

namespace sss
{
    public class Downloader
    {
        WebClient client = new WebClient();

        public HtmlDocument FindMovie(string Title)
        { 
            //This will be implemented later on, it will search movie.
        }

        public HtmlDocument FindKnownMovie(string ID)
        {
            HtmlDocument Page = (HtmlDocument)client.DownloadString(String.Format("http://www.imdb.com/title/{0}/", ID));
        }
    }
}

How can I convert a downloaded string to a valid HtmlDocument so I can parse it using HTMLAgilityPack?

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

棒棒糖 2024-09-12 06:29:38

这应该适用于 v1.4：

HtmlWeb hw = new HtmlWeb();
HtmlDocument doc = hw.Load(string.Format("http://www.imdb.com/title/{0}/", ID));

或

string html = client.DownloadString(String.Format("http://www.imdb.com/title/{0}/", ID));
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);

This should work with v1.4:

HtmlWeb hw = new HtmlWeb();
HtmlDocument doc = hw.Load(string.Format("http://www.imdb.com/title/{0}/", ID));

string html = client.DownloadString(String.Format("http://www.imdb.com/title/{0}/", ID));
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);

回复收藏 0 原文

青芜 2024-09-12 06:29:38

试试这个（基于这个相当古老的文档）：

string url = String.Format("http://www.imdb.com/title/{0}/", ID);
string content = client.DownloadString(url);
HtmlDocument page = new HtmlDocument();
page.LoadHtml(content);

基本上，转换很少是两种类型之间转换的正确方法 - 特别是当正在进行解析之类的事情时。

Try this (based on this fairly old document):

string url = String.Format("http://www.imdb.com/title/{0}/", ID);
string content = client.DownloadString(url);
HtmlDocument page = new HtmlDocument();
page.LoadHtml(content);

Basically casting is rarely the right way of converting between two types - particularly when there's something like parsing going on.

回复收藏 0 原文

﹂绝世的画 2024-09-12 06:29:38

以下代码行将使用您的内容创建一个 HtmlDocument：

// First create a blank document
HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
// Then load it with the content from the webpage you are trying to parse
doc.Load(new StreamReader(WebRequest.Create("yourURL").GetResponse()
                                 .GetResponseStream()));

The following lines of code will create a HtmlDocument with your content:

// First create a blank document
HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
// Then load it with the content from the webpage you are trying to parse
doc.Load(new StreamReader(WebRequest.Create("yourURL").GetResponse()
                                 .GetResponseStream()));

回复收藏 0 原文