html-agility-pack | 易学教程

Surround existing node with another node with Agility Pack

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问题 How would you go about surrounding all tables with a <div class="overflow"></div> node? This apparently does not do it: if (oldElement.Name == "table") { HtmlDocument doc = new HtmlDocument(); HtmlNode newElement = doc.CreateElement("div"); newElement.SetAttributeValue("class", "overflow"); newElement.AppendChild(oldElement); oldElement.ParentNode.ReplaceChild(newElement, oldElement); } Nothing happens to the tables when I try that code. But if i use: if (oldElement.Name == "table") {

Parsing HTML to get script variable value

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I'm trying to find a method of accessing data between tags returned by a server I am making HTTP requests to. The document has multiple tags, but only one of the tags has JavaScript code between it, the rest are included from files. I want to accesses the code between the script tag. An example of the code is: <html> // Some HTML <script> var spect = [['temper', 'init', []], ['fw\/lib', 'init', [{staticRoot: '//site.com/js/'}]], ["cap","dm",[{"tackmod":"profile","xMod":"timed"}]]]; </script> // More HTML </html> I'm looking for an ideal way to grab the data between 'spect' and parse it.

htmlagilitypack and dynamic content issue

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I want to create a web scrapper application and i want to do it with webbrowser control, htmlagilitypack and xpath. right now i managed to create xpath generator(I used webbrowser for this purpose), which works fine, but sometimes I cannot grab dynamically (via javascript or ajax) generated content. Also I found out that when webbrowser control(actually IE browser) generates some extra tags like "tbody", while again htmlagilitypack `htmlWeb.Load(webBrowser.DocumentStream);` doesn't see it. another note. I found out that following code actually grabs current webpage source, but I couldn't

get iframe source using HtmlAgilityPack

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问题 I am trying to get all iFrame source urls on an html doc. I tried using HtmlAgilityPack with xpath - but I don't seem to be getting a list of sources. HtmlAgilityPack.HtmlDocument myHtml= new HtmlDocument(); myHtml.LoadHtml(htmlString); foreach (HtmlNode framesrc) in myHtml.DocumentNode.SelectNodes("//iframe/src")) { srcCollection.add(framesrc); } Is my xpath wrong? 回答1: Actually this opensource html parser uses query look like following query: HtmlAgilityPack.HtmlDocument doc = new

HTML Agility Pack Null Reference

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问题 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("/

HtmlAgilityPack Drops Option End Tags

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I am using HtmlAgilityPack. I create an HtmlDocument and LoadHtml with the following string: <select id="foo_Bar" name="foo.Bar"><option selected="selected" value="1">One</option><option value="2">Two</option></select> This does some unexpected things. First, it gives two parser errors, EndTagNotRequired. Second, the select node has 4 children - two for the option tags and two more for the inner text of the option tags. Last, the OuterHtml is like this: <select id="foo_Bar" name="foo.Bar"><option selected="selected" value="1">One<option value="2">Two</select> So basically it is deciding for me

using a proxy with htmlagilitypack

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问题 I searched this question but didn't find anything that I was looking for, basically I want to use a proxy with htmlagilitypack, I had the code to do it before but lost it, here is the code I have so far, which is working. but I timed my self out on a program I was making and need to enable proxies. private void button1_Click(object sender, EventArgs e) { StringBuilder output = new StringBuilder(); string raw = "http://www.google.com"; HtmlWeb webGet = new HtmlWeb(); webGet.UserAgent =

Parsing HTML Table in C#

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I have an html page which contains a table and i want to parse that table in C# windows form http://www.mufap.com.pk/payout-report.php?tab=01 this is the webpage i want to parse i have tried > Foreach(Htmlnode a in document.getelementbyname("tr")) { richtextbox1.text=a.innertext; } i have tried some thing like this but it wont give me in tabular form as i am simply printing all trs so please help me regarding this thanx sorry for my english. L.B Using Html Agility Pack WebClient webClient = new WebClient(); string page = webClient.DownloadString("http://www.mufap.com.pk/payout-report.php?tab

remove html node from htmldocument :HTMLAgilityPack

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问题 In my code, I want to remove the img tag which doesn't have src value. I am using HTMLAgilitypack's HtmlDocument object. I am finding the img which doesn't have src value and trying to remove it.. but it gives me error Collection was modified; enumeration operation may not execute. Can anyone help me for this? The code which I have used is: foreach (HtmlNode node in doc.DocumentNode.DescendantNodes()) { if (node.Name.ToLower() == "img") { string src = node.Attributes["src"].Value; if (string

Which is the best HTML tidy pack? Is there any option in HTML agility pack to make HTML webpage tidy?

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问题 I am using html agility pack to parse html tabular information . Now there is some html content with missing ending tags and from such page because of missing ending tags html agility pack does not parse information properly.So I want to insert ending tags where there are missing ending tags so html agility pack parse information properly. So to insert the missing ending tags what should I do ?Should I do write my own code for that or use html tidy pack to do that ? If html tidy pack then