html-agility-pack | 易学教程

HtmlAgilityPack Post Login

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I'm trying to login to a site using HtmlAgilityPack (site: http://html-agility-pack.net ). Now, I can't exactly figure out how to go about this. I've tried setting the Html form values via m_HtmlDoc.DocumentNode.SelectSingleNode("//input[@name='EMAIL']").SetAttributeValue("value", "myemail.com"); I then submit the form with m_HtmlWeb.Load("http://example.com/", "POST"); This isn't working though. It's not logging in or anything. Does anyone else have any other insight? Thank you Kobi The HTML Agility Pack is used to parse HTML - you cannot use it to submit forms. Your first line of code

HTMLAgilityPack don't preserves original empty tags

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问题 If i have some empty tags like this <td width="15px"/> Agility pack fixes them to be like <td width="15px"></td> Is anything possible to do to override this behavior ? 回答1: Try this before saving: if (HtmlNode.ElementsFlags.ContainsKey("td")) { HtmlNode.ElementsFlags["td"] = HtmlElementFlag.Empty | HtmlElementFlag.Closed; } else { HtmlNode.ElementsFlags.Add("td", HtmlElementFlag.Empty | HtmlElementFlag.Closed); } This changes the behavior for all td elements which may not be what you want. I

Remove all empty/unnecessary nodes from HTML

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问题 What would be the preferred way to remove all empty and unnecessery nodes? For example should be removed and should also be removed (so the br tag is considered unneccesery in this case) Will I have to use some sort of recursive function for this? I'm thinking something along the lines of this maybe: RemoveEmptyNodes(HtmlNode containerNode) { var nodes = containerNode.DescendantsAndSelf().ToList(); if (nodes != null) { foreach (HtmlNode node in

Html Agility Pack - Problem selecting subnode

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I want to export my Asics running plan to iCal and since Asics do not offer this service, I decided to build a little scraper for my own personal use. What I want to do is to take all the scheduled runs from my plan and generate an iCal feed based on that. I am using C# and Html Agility Pack. What I want to do is iterate through all my scheduled runs (they are div nodes). Then next I want to select a few different nodes with my run nodes. My code looks like this: foreach (var run in doc.DocumentNode.SelectSingleNode("//div[@id='scheduleTable']").SelectNodes("//div[@class='pTdBox']")) { number+

How to strip comments from HTML using Agility Pack without losing DOCTYPE

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问题 I am trying to remove unnecessary content from HTML. Specifically I want to remove comments. I found a pretty good solution (Grabbing meta-tags and comments using HTML Agility Pack) however the DOCTYPE is treated as a comment and therefore removed along with the comments. How can I improve the code below to make sure the DOCTYPE is preserved? var htmlDoc = new HtmlDocument(); htmlDoc.LoadHtml(htmlContent); var nodes = htmlDoc.DocumentNode.SelectNodes("//comment()"); if (nodes != null) {

HtmlAgilityPack Documentation

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问题 I am new to C#(started today) and I am trying to understand someone else's code which used the HtmlDocument class in HtmlAgilliyPack to parse HTML documents. I cannot find any documentation of this package. The HtmlAgilityPack's project webpage says that there is no documentation available. If someone could point me to the documentation or explain the following methods(intermediate methods too) then that would be really helpful: - HtmlDocument.DocumentNode - HtmlDocument.DocumentNode.ssn -

HtmlAgilityPack & Windows 8 Metro Apps

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I'm trying to get HtmlAgilityPack to work with Windows 8 Metro Apps (Windows Store Apps). I've successfully written out all the code I need in a Windows Console App (C#) and it works perfectly for parsing the HTML I need and returning me the required string I need. // Create a new HtmlDocument and load the incoming string HtmlDocument menu = new HtmlDocument(); menu.OptionUseIdAttribute = true; menu.LoadHtml(response); HtmlNode nameToRemove = menu.DocumentNode.SelectSingleNode("//*[@id=\"maincontent_0_contentplaceholder_0_lblHall\"]"); My problem is with the DocumentNode.SelectSingleNode call.

HtmlAgilityPack.HtmlNode no definition for SelectNodes

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I am trying to use the HtmlAgilityPack to finds elements within a website. My Problem is the following: I created a Windows 8 universal app (c#) With the NuGet Manager I added: using System.Net.Http; using HtmlAgilityPack; Then i did: string htmlPage; using (var client = new HttpClient()) { htmlPage = await client.GetStringAsync("http://www.domain.de/"); } HtmlDocument myDocument = new HtmlDocument(); myDocument.LoadHtml(htmlPage); //this line results an error @ "SelectNodes" var metaTags = myDocument.DocumentNode.SelectNodes("//meta"); But visual studio says: Error 1 'HtmlAgilityPack.HtmlNode

HtmlAgilityPack WebGet.Load gives error “Object reference not set to an instance of an object”

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问题 I am on a project about getting new car prices from dealers websites. I can fetch most web sites html. But when I try to load one of them WebGet.Load(url) method gives Object reference not set to an instance of an object. error. I couldn't find any differences between these web sites. Normal working url examples : http://www.renault.com.tr/page.aspx?id=1715 http://www.hyundai.com.tr/tr/Content.aspx?id=fiyatlistesi website problematic : http://www.fiat.com.tr/Pages/tr/otomobiller/grandepunto

HtmlAgilityPack HtmlWeb.Load returning empty Document

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I have been using HtmlAgilityPack for the last 2 months in a Web Crawler Application with no issues loading a webpage. Now when I try to load a this particular webpage, the document OuterHtml is empty, so this test fails var url = "http://www.prettygreen.com/"; var htmlWeb = new HtmlWeb(); var htmlDoc = htmlWeb.Load(url); var outerHtml = htmlDoc.DocumentNode.OuterHtml; Assert.AreNotEqual("", pageHtml); I can load another page from the site with no problems, such as setting url = "http://www.prettygreen.com/news/"; In the past I once had an issue with encodings, I played around with htmlWeb