using System;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        Regex linkParser = new Regex(@"https:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.com\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)?", RegexOptions.Compiled | RegexOptions.IgnoreCase);

        string rawString = "some text with https://go.com link in it";

        foreach(Match m in linkParser.Matches(rawString))

            Console.WriteLine(m.Value);

    }

}