Cannot convert type 'string' to 'HtmlAgilityPack.HtmlDocument'?

Question

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?

Mikael Svenson · Accepted Answer · 2010-06-15 13:45:57Z

7

This should work with v1.4:

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

or

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

edited Jun 15, 2010 at 13:45

answered Jun 11, 2010 at 14:46

Mikael Svenson

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Comments

Glorfindel · Accepted Answer · 2021-03-18 07:13:15Z

5

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.

edited Mar 18, 2021 at 7:13

Glorfindel

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answered Jun 11, 2010 at 14:45

Jon Skeet

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Comments

jjnguy · Accepted Answer · 2010-06-11 14:46:26Z

1

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()));

answered Jun 11, 2010 at 14:46

jjnguy

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Comments

PICyourBrain · Accepted Answer · 2010-06-11 14:46:10Z

0

Maybe you could create a new file (.html) in for file system and then use a stream writer to write the string into the html file. Then pass that file to the parser

answered Jun 11, 2010 at 14:46

PICyourBrain

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