Web scraping is a technique used in any language to extract data from a website.
Web scraping basically works like this :
Html Agility Pack (HAP) is a common library used in .NET for web scraping. The HAP HTML parser is written in C# to read/write DOM and supports plain XPATH or XSLT. They have recently added the .NET Core version also for web scraping.
Load Html From Web
HtmlWeb.Load method gets an HTML document from an internet resource.
The following example loads an Html from the web.
var html = @"http://html-agility-pack.net/"; HtmlWeb web = new HtmlWeb(); var htmlDoc = web.Load(html); var node = htmlDoc.DocumentNode.SelectSingleNode("//head/title"); Console.WriteLine("Node Name: " + node.Name + "\n" + node.OuterHtml);
Source: Load from Web Method in Html Agility Pack
For an end-to-end sample see Easily Do Web Scraping In .NET Core 6.0
Some additional articles and resources with information about Web Scraping