#htmlagilitypack

[ambitiondaily30]

How does a virtual Arabic keyboard work? Download games

C# htmlagilitypack

Arabic keyboard 2024

[datamuse01]

Arabic keyboard and TikTok: type in Arabic quickly synonymous with French

C# htmlagilitypack

Free Arabic keyboard 2023

[technologycrowds1]

Learn How to Do HTML Manipulation by HTML AGILITY PACK

HTML Agility Pack is one of the best tools to do Web Scraping. It is a Free and open source library used to parse HTML documents. In this world of dynamic HTML requirements ,now it is very much required to manipulate the HTML content according the requirements of clients.

[memleketyazilim]

C# Siteden Veri Alma - HtmlAgilityPack Kullanımı

C# Siteden Veri Alma – HtmlAgilityPack Kullanımı

Merhaba Memleket Yazılım MYC Hizmetleri olarak sıkça sorulan ve merak edilen web site üzerinden veri-data çekme işlemleri hakkında sizlere içerik hazırladık. İçerikte kullanılacak kilit teknoloji yapısı ise HtmlAgilityPack paketidir. Arzu ederseniz HtmlAgilityPack Kullanımı hakkındaki içeriğimize artık geçiş yapalım. Bu arada Düzce’de çok büyük bir yazılım şirketinde Full Stack yazılım…

[freebiesms]

#OpenSource web crawler in C# based on #HTMLAgilityPack

TL; DR;

Here’s the Repo; https://github.com/infiniteloopltd/WebCrawler/

A Web Spider based using HTMLAgilityPack. This library will follow links within webpages in order to find more webpages, it works asynchronously, and will fire events every time a new page is encountered.

A few caveats, is that it’s single-threaded, so, it’s going to be rather slow. It holds it’s queue in memory, so it’s…

[sitecoreuio]

Sitecore Site Search Crawler Approach

Sometimes there is the need to provide the ability to do a site search that will return results based on the page HTML content. Sometimes this approach can be handled by querying each desired property of a Sitecore Item of Page type, some other times a custom search field could be implemented, and this custom field will contain different values including the needed Sitecore item properties and some datasources that belong to different page renderings. Sometimes reading the datasources, reading list page properties might be difficult and might complicate the development of this custom field.

The custom index field is the right approach to follow, although we could populate it a little bit different. The approach that I am proposing in this post is the crawler approach. The idea behind this approach is to populate the custom field using the content of the page that the user sees when hitting a page. Normally when a site visitor runs a site search query, he/she is really waiting to see a result back that contains what he searched for, this approach really hits this requirement.

The technical recipe for handling this approach is:

Declare a new custom computed index field

Create the code that will compute the content of this field

Inside the computed index field determine if its a page Sitecore item

Generate the URL for this page

Get the HTML response

Crawl the HTML

Save the important HTML content into the custom field

Note: We don’t need content that is in every single page i.e. Main Menu, Footer, Copyright, etc.

Now lets go deeper with each step of the previous list.

Declare a new custom index field

To create a new custom index field you need to do two things. First declare the field and its type and second detail which class will process this field.

<?xml version="1.0" encoding="UTF-8"?> <configuration xmlns:patch="http://www.sitecore.net/xmlconfig/">   <sitecore>      <contentSearch>         <indexConfigurations>            <defaultLuceneIndexConfiguration type="Sitecore.ContentSearch.LuceneProvider.LuceneIndexConfiguration, Sitecore.ContentSearch.LuceneProvider">               <fieldMap type="Sitecore.ContentSearch.FieldMap, Sitecore.ContentSearch">                  <fieldNames hint="raw:AddFieldByFieldName">                     <field fieldName="_sitesearchfield" storageType="yes" indexType="TOKENIZED" vectorType="NO" boost="1f" type="System.String" settingType="Sitecore.ContentSearch.LuceneProvider.LuceneSearchFieldConfiguration, Sitecore.ContentSearch.LuceneProvider" />                  </fieldNames>               </fieldMap>               <documentOptions type="Sitecore.ContentSearch.LuceneProvider.LuceneDocumentBuilderOptions, Sitecore.ContentSearch.LuceneProvider">                  <fields hint="raw:AddComputedIndexField">                     <field fieldName="_sitesearchfield" returnType="string">DEMO._Classes.IndexComputedFields.SiteSearchField, DEMO</field>                  </fields>               </documentOptions>            </defaultLuceneIndexConfiguration>         </indexConfigurations>      </contentSearch>   </sitecore> </configuration>

In the code above you can notice that we have declared a new custom field named: _sitesearchfield. This field is TOKENIZED string. Also you can see that this computed field has a class associated to it DEMO._Classes.IndexComputedFields.SiteSearchField  this class will compute the content of this field.

Create the code that will compute the content of this field

The class below does the job of generating the content of the custom field. First the class identifies if the current item that is being indexed is of type Page. Then it queries the page using the generated URL. Then it strips out all the html code and it only considers the content inside a specific HTML id. This is to prevent saving un relevant content that is present in every page. Content like the header, footer, copyrights and random banners.

public class SiteSearchField : IComputedIndexField { public object ComputeFieldValue(IIndexable indexable) { var item = indexable as SitecoreIndexableItem; if (item == null || item.Item == null) return string.Empty; string url = null; string content = string.Empty; try { if (item.Item.Paths.FullPath.StartsWith("/sitecore/content/") && item.Item.TemplateInheritsFrom(new TemplateID(IWeb_Base_WebpageConstants.TemplateId))) { #region PageUrl using (new SiteContextSwitcher(Factory.GetSite(AppSettingsHelper.GetPublixSitecoreSiteName()))) { url = LinkManager.GetItemUrl(item, new UrlOptions()                            {                                AlwaysIncludeServerUrl = true                            }); } #endregion #region WebRequestToPage // Request the web page using (var client = new WebClient()) { string pageContent = client.DownloadString(url); // Parse the page's html using HtmlAgilityPack HtmlDocument htmlDocument = new HtmlDocument(); htmlDocument.LoadHtml(pageContent); // remove all html tags and keep just the relevant content HtmlNode mainContainer = htmlDocument.GetElementbyId(AppSettingsHelper.GetSectionMainContentId()); content = mainContainer != null ? GetAllInnerTexts(mainContainer) : null; } #endregion return content; } } catch (WebException webException) { Log.Warn($"Failed to populate field {indexable.Id} ({url}): {webException.Message}", webException, this); throw; } catch (Exception exc) { Log.Error($"An error occurred when indexing {indexable.Id}: {exc.Message}", exc, this); } return content; } protected virtual string GetAllInnerTexts(HtmlNode node) { node.Descendants() .Where(n => n.Name == "script" || n.Name == "style") .ToList() .ForEach(n => n.Remove()); return RemoveWhitespace(node.InnerText.Replace(Environment.NewLine, " ")); } private static string RemoveWhitespace(string inputStr) { const int n = 5; StringBuilder tmpbuilder = new StringBuilder(inputStr.Length); for (int i = 0; i < n; ++i) { string scopy = inputStr; bool inspaces = false; tmpbuilder.Length = 0; for (int k = 0; k < inputStr.Length; ++k) { char c = scopy[k]; if (inspaces) { if (c != ' ') { inspaces = false; tmpbuilder.Append(c); } } else if (c == ' ') { inspaces = true; tmpbuilder.Append(' '); } else { tmpbuilder.Append(c); } } } return tmpbuilder.ToString(); } public string FieldName { get; set; } public string ReturnType { get; set; } }

Inside the computed index field determine if its a page Sitecore item

if (item.Item.Paths.FullPath.StartsWith("/sitecore/content/") && item.Item.TemplateInheritsFrom(new TemplateID(IWeb_Base_WebpageConstants.TemplateId)))

This line is in charge of identifying if the current item is a page type and that it is inside the Sitecore content tree.

Generate the URL for this page

using (new SiteContextSwitcher(Factory.GetSite(AppSettingsHelper.GetPublixSitecoreSiteName())))                    {                        url = LinkManager.GetItemUrl(item, new UrlOptions()                            {                                AlwaysIncludeServerUrl = true                            });                    }

First we need to switch to the right site context otherwise we would be trying to generate a URL based on the index job context. Then using the link manager we can create the site URL for this specific item.

Get the HTML response

using (var client = new WebClient())                    {                        string pageContent = client.DownloadString(url);                        // Parse the page's html using HtmlAgilityPack                        HtmlDocument htmlDocument = new HtmlDocument();                        htmlDocument.LoadHtml(pageContent);                        // remove all html tags and keep just the relevant content                        HtmlNode mainContainer = htmlDocument.GetElementbyId(AppSettingsHelper.GetSectionMainContentId());                        content = mainContainer != null ? GetAllInnerTexts(mainContainer) : null;                    }

Here we get the webpage content using System.Net.Webclient

Crawl the HTML

Once we have the webpage content we stored it in a HtmlDocument (HtmlAgilityPack) and we proceed to getting only the HTML id that has the main content of the page. Then using some utilities we remove the HTML tags and any javascript or CSS line declarations.

protected virtual string GetAllInnerTexts(HtmlNode node)        {            node.Descendants()                .Where(n => n.Name == "script" || n.Name == "style")                .ToList()                .ForEach(n => n.Remove());            return RemoveWhitespace(node.InnerText.Replace(Environment.NewLine, " "));        }

Save the important HTML content into the custom field

Now that we have the content that we want to save in this custom field, that later will be used to query information for the site search functionality, we just return the value of the final string.

This post was created by Carlos Araujo. You can contact me in twitter @caraujo

[ehclub]

시멘틱 웹 검색 서비스 프로젝트 - 4. HtmlAgilityPack 설치 및 HTML BODY 읽어오기 [데이터 분석 with C#]

네이버 뉴스를 크롤링 해 온 것은 Open API를 이용한 것이라 XML Document로 파싱할 수 있었습니다. 웹 페이지를 크롤링 해 오려면 HTML 파서를 요구합니다. WebBrowser 컨트롤의 HtmlDocument를 사용할 수 있지만 웹 로봇에는 적합하지 않습니다. Back Ground에서 동작하는 서비스에서 WebBrowser 컨트롤의 HtmlDocument는 동작하지 않습니다. 이러한 이유로 서비스에서 동작 가능한 HTML Parser인 HtmlAgilityPack을 설치할 것입니다. 그리고 이를 이용하여 HTML Body 내용을 얻어오는 실습을 진행합니다. https://youtu.be/yZ4qKkEtF1c

[gmright11-blog]

Readme.png

# Add the “HtmlAgilityPack” as a NuGet package to your solution

# Need a using statement – “using HtmlAgilityPack;”

using (var httpClient = new HttpClient())

{

var formattedUrl = “https://www.nuget.org/packages/Microsoft.AspNet.WebApi/5.2.6&#8221;;

var webResponse = await httpClient.GetStringAsync(formattedUrl);

var htmlDoc = new HtmlDocument();

htmlDoc.LoadHtml(webResponse);

// XPath expression…

[alanlcole]

Create A Sample C# Corner 👨‍🎓Flair With ASP.NET MVC

We will see how to create a sample C# Corner User Flair in ASP.NET MVC application using HtmlAgilityPack. We will also add a provision to save this flair as an image using a third-party JavaScript library html2canvas. source https://www.c-sharpcorner.com/article/create-a-sample-c-sharp-corner-flair-with-asp-net-mvc/ from C Sharp Corner http://bit.ly/2ENU5KC

[carlajsmith]

Create A Sample C# Corner 👨‍🎓Flair With ASP.NET MVC

We will see how to create a sample C# Corner User Flair in ASP.NET MVC application using HtmlAgilityPack. We will also add a provision to save this flair as an image using a third-party JavaScript library html2canvas. from C-Sharpcorner Latest Content http://bit.ly/2CAKYvc

from C Sharp Corner https://csharpcorner.tumblr.com/post/181465245566

[jmhenriquez]

Cool HTML parsing with HtmlAgilityPack

Today comes this guy from the press department to tell me that his job is to collect news related to our ministry and that I was supposed to help him.... But none of that matters now, what is important is what I'm going to talk about.

Have you ever parsed HTML? I did it like three, or four, years ago and it was sad. Thankfully, is not the same in the present time. Introducing...

HtmlAgilityPack

This is an agile HTML parser that builds a read/write DOM and supports plain XPATH or XSLT (you actually don't HAVE to understand XPATH nor XSLT to use it, don't worry...). It is a .NET code library that allows you to parse "out of the web" HTML files. The parser is very tolerant with "real world" malformed HTML. The object model is very similar to what proposes System.Xml, but for HTML documents (or streams).

After downloading the HtmlAgilityPack

Parsing code is as simple as:

// Creating a HtmlDocument HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument(); // You can pass a string containing the HTML you want to parse doc.LoadHtml(/* myStringWithHtmlContent */); // Or you can use the Load method to pass the content in a different medium doc.Load(/* A String holding the path to the html file */); doc.Load(/* A TextReader */); doc.Load(/* A Stream */); // If there ware any parsing errors you'll find them in the ParseErrors property. IEnumerable errors = doc.ParseErrors; // After this, we access the document root node to start moving through the document var root = doc.DocumentNode; // Using this object's helper methods we can search (using XPath) or write to the document root.SelectNodes(/* Return elements matching the expression */); root.SelectSingleNode(/* Will try to return a single element */);

Quite easy, I had some issues before with the XPath language, but that was solved. To learn more about the language you can check at W3School.com, they have very useful documentation.

In conclusion I supposed I was going to suffer a little more while fulfilling this guy's desires but instead it was kind of cool. The HtmlAgilityPack is a wonderful tool and one that should be close to your belt. Sad there is very little official documentation, but there is still information spread across the galaxy.

[ducnghiatq]

A few things that will help you when working with HtmlAgilityPack and XPath expressions.

If run is an HtmlNode, then:

1. run.SelectNodes("//div[@class='date']") Will will behave exactly like doc.DocumentNode.SelectNodes("//div[@class='date']")

2. run.SelectNodes("./div[@class='date']") Will give you all the <div> nodes that are children of run node. It won't search deeper, only at the very next depth level.

3. run.SelectNodes(".//div[@class='date']") Will return all the <div> nodes with that class attribute, but not only next to the run node, but also will search in depth (every possible descendant of it)

[aloisdg]

Get content from a webpage or "How to Scrape the Sky"

Sometimes you may want something on a webpage or a lot things. If you can get it on a browser, you can get it everywhere. We call it web scraping. When you scrape, you just take the stuff you want. Basically, we are building your own API. If you source expose an API, use it. We are reading a page, if the page change we have to change too. An API is the direct source to the content. Safe drinking water starts at the source.

Well, imagine there is no Tumblr API and you want every title of this blog's front page. So you can't use /api/read nor /rss, what could you do ? Let's see.

We want to access to the webpage. A webpage is a content wrapping in a strange, gloomy, odd language called HTML. To parse it, there is a lot of solution. One is to use a strangest, gloomiest, oddest language called Regex. Let's do it. No, I am joking. By the way, you should read this thread from StackOverflow when you will finish to read this article. To get our content from the page we will use XPath and the HtmlAgilityPack.

XPath

XPath allow us to navigate around our webpage. We aim our content with it. Every modern browser get XPath as a built-in feature. I use a Chrome extension called XPath Helper to enhance this feature. You can download XPath Helper on the Chrome WebStore. If you are looking for a vanilla solution you can write $x("query") on the debug console and get the query from the Inspect Element tool.

If you are asking yourself how to use "XPath Helper", just follow instructions form the extension :

Open a new tab and navigate to your favorite webpage.

Hit Ctrl-Shift-X to open the XPath Helper console.

Hold down Shift as you mouse over elements on the page. The query box will continuously update to show the full XPath query for the element below the mouse pointer. The results box to its right will show the evaluated results for the query.

If desired, edit the XPath query directly in the console. The results box will immediately reflect any changes.

Hit Ctrl-Shift-X again to close the console.

I recommand you to play with the query in the console of XPath helper. You can learn more about the XPath Syntax on the MSDN, on Genius or with the RFC.

For example :

/html/body/div[@id='main']/div[@id='post'][2]/a/div[@class='title']

could be write

//div[@id='post'][2]/a/div[@class='title']

or like this to get each post's title of the page

//div[@id='post'][*]/a/div[@class='title']

Now, we have an XPath query. What to do with? We should ask to HtmlAgilityPack.

HtmlAgilityPack

So what is the HtmlAgilityPack (HAP) ? They present themself like this :

It is a .NET code library that allows you to parse "out of the web" HTML files.

And I have nothing to add. We are going to load a HTML page and parse the content we are looking for with our XPath query. To use HAP, we just have to install it from nuget.

There is a lot of example around the web about "how to use HAP?", here is mine :

var url = "http://aloisdg.tumblr.com/"; var query = "//div[@id='post'][.]/a/div[@class='title']"; HtmlDocument htmlDocument = new HtmlWeb().Load(url); foreach (var node in htmlDocument.DocumentNode.SelectNodes(query)) { // do something with node.InnerHtml Console.WriteLine(node.InnerHtml); }

The output is :

Exporter un visuel XAML en PNG Compiler du C# en ligne de commande sous Linux Générer une doc et un UML avec Doxygen et Graphviz Segoe UI alternatives Faire un Slider XAML complet en 5 petites étapes

You may want to decode this ~~ugly~~ html code. No need to code anything because .NET give you the method WebUtility.HtmlDecode().

The output with WebUtility.HtmlDecode() is :

Exporter un visuel XAML en PNG Compiler du C# en ligne de commande sous Linux Générer une doc et un UML avec Doxygen et Graphviz Segoe UI alternatives Faire un Slider XAML complet en 5 petites étapes

better isn't ?

Next stuff is up to you. Happy scraping.

PS : If you are looking for a solution without any code, you can check kimono or import.io. Another solution is to use Selenium.

[technologycrowds1]

The results of COVID-19 are having a big effect on IT Industries , affecting raw substances supply, disrupting the electronics value chain, and inflicting an inflationary risk on products.The Indian economy has taken quite a hiatus but there is a silver lining (it may come late but it will definitely).

[technologycrowds1]

Here demonstrated very well how to search specific text from HTML (Web Page) using HTML Agility Pack C#, below steps followed:

 Step 1: Define html Document

 Step 2: Declare HTMLWeb

 Step 3: Loading document for specific URL

 Step 4: Searching for specific word in HTML Document 

Step 5: Finally, displayed final output