html-agility-pack | 易学教程

HtmlAgilityPack example for changing links doesn't work. How do I accomplish this?

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The example on codeplex is this : HtmlDocument doc = new HtmlDocument(); doc.Load("file.htm"); foreach(HtmlNode link in doc.DocumentElement.SelectNodes("//a[@href"]) { HtmlAttribute att = link["href"]; att.Value = FixLink(att); } doc.Save("file.htm"); The first issue is HtmlDocument. DocumentElement does not exist! What does exist is HtmlDocument. DocumentNode but even when I use that instead, I'm unable to access the href attribute as described. I get the following error: Cannot apply indexing with [] to an expression of type 'HtmlAgilityPack.HtmlNode' Here's the code I'm trying to compile

Html-Agility-Pack not loading the page with full content?

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i am using Html Agility Pack to fetch data from website(scrapping) My problem is the website from i am fetching the data is load some of the content after few seconds of page load. SO whenever i am trying to read the particular data from particular Div its giving me null. but in var page i just not getting the division reviewBox ..becuase its not loaded yet. public void FetchAllLinks(String Url) { Url = "http://www.tripadvisor.com/"; HtmlDocument page = new HtmlWeb().Load(Url); var link_list= page.DocumentNode.SelectNodes("//div[@class='reviewBox']"); foreach (var link in link_list) { htmlpage

HTMLAgilityPack Expression cannot contain lambda expressions

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问题 I want the InnerText of the div called album_notes. As I did in many other places, my code is the following: public void Album_Notes(HtmlAgilityPack.HtmlDocument bandHTML) { this.lblNotes.Text = bandHTML.DocumentNode.Descendants("div").First(x => x.Id == "album_notes").InnerHtml; The TextBlock, lblNotes, ends up with no text as the result. If I open the QuickWatch while in debug mode, I get the following result: Expression cannot contain lambda expressions even though I've used the exact same

HTML Agility Pack Parsing With Upper & Lower Case Tags?

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I am using the HTML Agility Pack to great effect, and am really impressed with it - However, I am selecting content like so doc.DocumentNode.SelectSingleNode("//body").InnerHtml How to I deal with the following situation, with different documents? <body> <Body> <BODY> Will my code above only get the lower case versions? The Html Agility Pack handles HTML in a case insensitive way. It means it will parse BODY, Body and body the same way. It's by design since HTML is not case sensitive (XHTML is). That said, when you use its XPATH feature, you must use tags written in lower case. It means the "/

How can I use iText to convert HTML with images and hyperlinks to PDF?

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I'm trying to convert HTML to PDF using iTextSharp in an ASP.NET web application that uses both MVC , and web forms . The <img> and <a> elements have absolute and relative URLs, and some of the <img> elements are base64 . Typical answers here at SO and Google search results use generic HTML to PDF code with XMLWorkerHelper that looks something like this: using (var stringReader = new StringReader(xHtml)) { using (Document document = new Document()) { PdfWriter writer = PdfWriter.GetInstance(document, stream); document.Open(); XMLWorkerHelper.GetInstance().ParseXHtml( writer, document,

Can't download HTML data from https URL using htmlagilitypack

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I have a "small" problem htmlagilitypack(HAP). When I tried to get data from a website I get this error: An unhandled exception of type 'System.ArgumentException' occurred in mscorlib.dll Additional information: 'gzip' is not a supported encoding name. For information on defining a custom encoding, see the documentation for the Encoding.RegisterProvider method. I'm using this piece of code to get the data from the website: HtmlWeb page = new HtmlWeb(); var url = "https://kat.cr/"; var data = page.Load(url); After this code i get that error. I tried everything from the google but nothing helped

HTML Agility Pack Null Reference

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I've got some trouble with the HTML Agility Pack. I get a null reference exception when I use this method on HTML not containing the specific node. It worked at first, but then it stopped working. This is only a snippet and there are about 10 more foreach loops that selects different nodes. What am I doing wrong? public string Export(string html) { var doc = new HtmlDocument(); doc.LoadHtml(html); // exception gets thrown on below line foreach (var repeater in doc.DocumentNode.SelectNodes("//table[@class='mceRepeater']")) { if (repeater != null) { repeater.Name = "editor:repeater"; repeater

Stripping all html tags with Html Agility Pack

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I have a html string like this: <html><body><p>foo <a href='http://www.example.com'>bar</a> baz</p></body></html> I wish to strip all html tags so that the resulting string becomes: foo bar baz From another post here at SO I've come up with this function (which uses the Html Agility Pack): Public Shared Function stripTags(ByVal html As String) As String Dim plain As String = String.Empty Dim htmldoc As New HtmlAgilityPack.HtmlDocument htmldoc.LoadHtml(html) Dim invalidNodes As HtmlAgilityPack.HtmlNodeCollection = htmldoc.DocumentNode.SelectNodes("//html|//body|//p|//a") If Not htmldoc Is

Getting text between all tags in a given html and recursively going through links

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问题 i have checked a couple of posts on stack overflow regarding getting all the words between all the html tags! All of them confused me up! some people recommend regular expression specifically for a single tag while some have mentioned parsing techniques! am basically trying to make a web crawler! for that i have got the html of the link i fetched to my program in a string! i have also extracted the links from the html that i stored in my data string! now i want to crawl through the depth and

Why is this HtmlAgilityPack operation invalid when there are, indeed, matching elements?

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问题 I get "InvalidOperationException > Message=Sequence contains no matching element" with the following code: private void buttonLoadHTML_Click(object sender, EventArgs e) { GetParagraphsListFromHtml(@"C:\PlatypiRUs\fitt.html"); } // This code adapted from Kirk Woll's answer at http://stackoverflow.com/questions/4752840/html-agility-pack-c-sharp-paragraph- parsing-problem public List<string> GetParagraphsListFromHtml(string sourceHtml) { var pars = new List<string>(); HtmlAgilityPack