How to Efficiently Remove HTML Tags from a String?

Extracting Content from HTML Strings: Removing HTML Tags

Removing HTML tags from a string can be a common task in programming. While the specific tags present in the string may vary, finding a reliable method to strip them all can be challenging.

One simple approach is to utilize regular expressions. The following regex can remove all HTML tags:

public static string StripHTML(string input)
{
   return Regex.Replace(input, "<.*?>", String.Empty);
}

This solution replaces all HTML tags (< followed by any number of characters, ending with >) with an empty string.

However, this approach has its limitations. It may not handle all cases, especially when dealing with complex or deeply nested HTML structures.

A more robust solution is to use the HTML Agility Pack, an open-source library specifically designed for manipulating HTML. An example using the library:

HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(input);
Console.WriteLine(doc.DocumentNode.InnerText);

This solution parses the HTML into an HTML node object and extracts its inner text, effectively removing all HTML tags while preserving the string's content.

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