// C# Extension Method
// Doc: https://csharp-extension.com/en/method/1002051/string-containsany
// @nuget: Z.ExtensionMethods
using System;
public class Program
{
public static void Main()
string text =
@"<!DOCTYPE html>
<html>
<body>
<h1>This is <b>bold</b> heading</h1>
<p>This is <u>underlined</u> paragraph</p>
<h2>This is <i>italic</i> heading</h2>
</body>
</html> ";
string [] values = {"<body>", "<h3>"};
// C# Extension Method: String - ContainsAny
if(text.ContainsAny(values))
Console.WriteLine("String found.");
}
