using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        string username = "Passme";

        string password = "Pass@123";

        Console.WriteLine(password.Contains(username));

        /*string stringToCheck = "text1";

        string[] stringArray = {"text1", "testtest", "test1test2", "test2text1"};

        foreach (string x in stringArray)

        {

            Console.WriteLine(stringToCheck.Contains(x));

        }*/

        string stringToCheck = "text1text2text3";

        string[] stringArray = new string[]{"text2"};

        if (Array.Exists<string>(stringArray, (Predicate<string>)delegate (string s)

        {

            return stringToCheck.IndexOf(s, StringComparison.OrdinalIgnoreCase) > -1;

        }

​

        ))

        {

            Console.WriteLine("Found!");

        }

    }

}