C# Program Project to Remove HTTP , HTTPS and WWW Protocol From URL

The following code is the solution:

using System;
using System.Text.RegularExpressions;

namespace ConsoleApplication1
{
  class Program
  {
    static void Main(string[] args)
    {
      string txt="https://www.example.com";

// Regex class is used to create the regular expression object.
      string re1="((?:http|https)(?::\\/{2}[\\w]+)(?:[\\/|\\.]?)(?:[^\\s\"]*))";    // HTTP URL 1
// Match class is used to check the regular expression object with the given string.

      Regex r = new Regex(re1,RegexOptions.IgnoreCase|RegexOptions.Singleline);
      Match m = r.Match(txt);
      if (m.Success)
      {
            String httpurl1=m.Groups[1].ToString();
            Console.Write("("+httpurl1.ToString()+")"+"\n");
      }
      Console.ReadLine();
    }
  }
}