How do I use the HTML Agility Pack? My XHTML document is not completely valid. That's why I wanted to use it. How do I use it in my project? Using the Html. Agility. Pack to parse HTML in ASP. NET. Hardly a week goes by without someone asking a question in the ASP. NET forums about parsing HTML for one purpose or another. Mostly, the questions are couched in terms of 'finding values' or similar, prompting responses from the community that recommend one regular expression pattern or another, treating HTML as a string of text with no structure or rules. In fact, HTML is a structured document format with a set of very clearly defined rules, which means that it can easily be parsed given the right tool. My favourite tool for parsing HTML is the Html. The HtmlAgilityPack (HAP) has been around for some time now, and is available via Nuget. You can install it using the command. HAP accepts HTML as a string, file, stream or. About Maid Marian Entertainment Inc. Maid Marian Entertainment Inc. With an Agility 3 Wireless Alarm System, all motion detectors have a camera built in. When the alarm is triggered this camera springs to life and transmits a series of still images to our cloud server. A notification is then. Agility. Pack. You can install it using the commandinstall- package htmlagilitypack. HAP accepts HTML as a string, file, stream or Text. Reader object. The HTML is loaded into an Html. Document object using the Load method for streams, files and the Text. Reader option, and the Load. Html method for loading HTML represented as a string. The two most commonly used methods are those that load a file or string: var html = new Html. Document(). html.
Load(@. From there, you can use LINQ (or XPath) to query the document, or more specifically, the collection of Html. Node objects returned by the Descendants() method: var html = new Html. How To Install Html Agility Pack In Visual Studio 2012Document(). html. Load. Html(new Web. Client(). Download. String(. You can filter them in a number of ways. For example, you can pass a tag name to the Descendants method to filter by that tag. The following snippet queries the document for anchor tags and unordered lists: var html = new Html. Document(). html. Load. Html(new Web. Client(). Download. String(. This example searches for all elements with a class of . The following example will demonstrate how to obtain the number of points I have been awarded as displayed on my profile page at the www. The first step is to examine the relevant HTML. I have only included a small section containing the content I am after, and have highlighted it below: < div class=. The best strategy is to target an easily identifiable single element, and then to navigate from there. There are a couple of fairly obvious candidates: a div with a class of . If I was creating a tool to regularly parse the same live page, I would generally avoid targeting elements by class because, even though there may only be one on the page today (as is the case for both potential targets in this instance), more could be added in future. Therfore any assumptions about the number of elements is a brittle assumption. Id attributes, on the other hand, should be unique. Having provided that warning, here's the code that starts with the element with a class of . Since there is only one div element matching the . Then you can use the Descendants method to return all the child elements of the div that match the p selector. Again, there is only one, so it is safe to use the Single method to return the only paragraph. Finally, the text content is obtained via the Inner. Text property. An alternative property is the Inner. Html property, which returns all content, not just the text. Once you have the text content, you can perform Regex on it to extract just the numbers: var points = Regex. Match(content, @. It provides a familiar LINQ to Objects API which makes working with the library pretty easy. IF you need to parse or manipulate HTML, this is the only tool you need. Full documentation is available from the project's Codeplex site. Since it's a chm file, you will need to unblock it before you can use it. You do this by right- clicking on the file and going to its properties, then clicking the Unblock button.
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