html-agility-pack | 易学教程

HtmlAgilityPack not looping through collection

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问题 I have a webpage with a collection of div's with the class "messages". I am trying to loop through them and put them into a CSV file, however I cant get the collection to loop properly. Here is the code: string fpath = @"C:\Texts\messages.html"; HtmlDocument page = new HtmlWeb().Load(fpath); var msgs = page.DocumentNode.SelectNodes("//div[@class='message']"); List<string> msgList = new List<string>(); foreach (var msg in msgs) { msgList.Add(msg.InnerHtml); } The msg stays the same through

HtmlAgilityPack close form tag automatically

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问题 I am tring to parse an html file with this code: <div><form>...</div>...</form> the problem is that the HtmlAgilityPack automatically close the form tag before the div ending tag: <div><form>...</form></div>...</form> so when I parse the form some of the form elements are missing. (I get only the elements befor the automatically added tag) I already tried: htmlDoc.OptionFixNestedTags = false; htmlDoc.OptionAutoCloseOnEnd = false; htmlDoc.OptionCheckSyntax = false; HtmlNode.ElementsFlags

C# htmlagility pack, capturing redirct

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问题 HI all, this one is really simple (I hope). I'm using htmlagility pack to do my webcrawling. So what happens if I input url whatever, that then directs me to a new url, how do I capture that new redirected URL? If htmlagility pack doesnt have a way, can someone suggest another method? 回答1: When you create your HttpWebRequest you can set AllowAutoRedirect property to true and it will automatically follow any redirects you have. HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest

Need to replace an img src attrib with new value

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问题 I'm retrieving HTML of many webpages (saved earlier) from SQL Server. My purpose is to modify an img's src attribute. There is only one img tag in the HTML and it's source is like so: ... <td colspan="3" align="center"> <img src="/crossword/13cnum1.gif" height="360" width="360" border="1"><br></td> ... I need to change the /crossword/13cnum1.gif to http://www.nostrotech.com /crossword/13cnum1.gif Code: private void ReplaceTest() { String currentCode = string.Empty; Cursor saveCursor = Cursor

HTML agility pack for windows phone 8.1

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问题 I am still trying programming for windows phone 8.1 but I have a little problem. I want parse HTML data and I found one tutorial for better mind this tutorial = click here; but It works great only in windows phone 7/8 with HTMLAgility pack. I tried manual add library but versions sl3-wp, winrt45 don't support method: htmlDocument.DocumentNode.SelectNodes("//div[starts-with(@class, 'list_item')]")); and version for wp7 doesn't work too. Any Ideas how to parse data for WP 8.1 ? thank you in

Html Agility Pack cannot find list option using xpath

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问题 This is related to my previous question, but it seems I have another corner case where Html Agility Pack doesn't work as expected. Here's the Html (stripped down to the essentials, and sensitive information removed): <html> <select id="one-time-payment-form:vendor-select-supplier"> <option value="1848">Frarma Express</option> <option value="2119">Maderas Garcia</option> <option value="1974">Miaris, S.A.</option> <option value="3063">Ricoh Panama</option> <option value="3840">UNO EXPRESS<

Better way to add a style attribute to Html using HtmlAgilityPack

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问题 I am using the HtmlAgilityPack. I am searching through all P tags and adding a "margin-top: 0px" to the style within the P tag. As you can see it is kinda "brute forcing" the margin-top attribute. It seems there has to be a better way to do this using the HtmlAgilityPack but I could not find it, and the HtmlAgilityPack documentation is non-existent. Anybody know a better way? HtmlNodeCollection pTagNodes = node.SelectNodes("//p[not(contains(@style,'margin-top'))]"); if (pTagNodes != null &&

HTML Agility Pack, create new line in HTML file

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问题 Dim codice As String Dim doc As New HtmlDocument Dim coll As HtmlNodeCollection Dim node As HtmlNode Dim nuovo As HtmlNode codice = "<li><a href=""#"" onclick=""ApriClass('" + D_Clas.SafeFileName + "')"" title="""">� " + T_ClasNome.Text + "</a></li>" doc.Load("classifica.html") coll = doc.GetElementbyId("subnavi").SelectNodes("ul") node = coll.Last nuovo = HtmlNode.CreateNode(codice) node.AppendChild(nuovo) doc.Save("classifica.html") This add a line of HTML in "codice" at a specified

Is there an XmlReader equivalent for HTML in .Net?

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问题 I've used HtmlAgilityPack in the past to parse HTML in .Net but I don't like the fact that it only uses a DOM model. On large documents and/or those with heavy levels of nesting it is possible to hit stack overflow or out of memory exceptions. Also in general a DOM based parsing model uses significantly more memory than a streaming based approach, typically because the process that wants to consume the HTML may only need a few elements to be available at a time. Does anyone know of a decent

Getting data from HTML table into a datatable

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问题 Ok so I need to query a live website to get data from a table, put this HTML table into a DataTable and then use this data. I have so far managed to use Html Agility Pack and XPath to get to each row in the table I need but I know there must be a way to parse it into a DataTable. (C#) The code I am currently using is: string htmlCode = ""; using (WebClient client = new WebClient()) { htmlCode = client.DownloadString("http://www.website.com"); } HtmlAgilityPack.HtmlDocument doc = new