using System;

using System.Text.RegularExpressions;

​

public class Program

{

    public static void Main()

    {

        TargetUrlDetails temp = GetVerticalAndDomain("www.amazon.co.uk");

        Console.WriteLine("Vertical: " + temp.Vertical + ", Domain: " + temp.Domain + ", ProtocolPlusDomain: " + temp.ProtocolPlusDomain + ", UrlWithoutParameters: " + temp.UrlWithoutParameters);

    }

    public static TargetUrlDetails GetVerticalAndDomain(string url)

        {

            var urlbase = url.IndexOf('?') > -1 ? url.Substring(0, url.IndexOf('?')) : url;

            var a = url.Split(new[] { '/', '&' }, StringSplitOptions.RemoveEmptyEntries);

​

            string[] s;

            if (a.Length < 3 ||

                (s = a[2].Split(new[] { '?', '=' }, StringSplitOptions.RemoveEmptyEntries)).Length == 0)

            {

                return a.Length == 2

                    ? new TargetUrlDetails(string.Empty, a[1], a[0] + "//" + a[1], urlbase)

                    : new TargetUrlDetails(string.Empty, string.Empty, string.Empty, urlbase);

            }

​

            return new TargetUrlDetails(

                a.Length >= 3 ? s[0] : string.Empty,

                a.Length >= 2 ? a[1] : string.Empty,

                a.Length >= 2 ? a[0] + "//" + a[1] : url,

                urlbase);

        }

}

​

public class TargetUrlDetails

    {

        /// <summary>

        /// Initializes a new instance of the <see cref="TargetUrlDetails"/> class.

        /// </summary>

        /// <param name="vertical">

        /// The vertical.

        /// </param>

        /// <param name="domain">

        /// The domain.

        /// </param>

        /// <param name="protocolPlusDomain">

        /// The protocol Plus Domain.

        /// </param>

        /// <param name="urlWithoutParameters">

        /// The url Without Parameters.

        /// </param>

        public TargetUrlDetails(string vertical, string domain, string protocolPlusDomain, string urlWithoutParameters)

        {

            Vertical = vertical;

            Domain = domain;

            ProtocolPlusDomain = protocolPlusDomain;

            UrlWithoutParameters = urlWithoutParameters;

        }

​

        /// <summary>

        /// Gets the Vertical property of the URL.

        /// </summary>

        public string Vertical { get; private set; }

​

        /// <summary>

        /// Gets the Domain property of the URL.

        /// </summary>

        public string Domain { get; private set; }

​

        /// <summary>

        /// Gets the Protocol + Domain properties of the URL.

        /// </summary>

        public string ProtocolPlusDomain { get; private set; }

​

        /// <summary>

        /// Gets the base address of the URL minus any parameters.

        /// </summary>

        public string UrlWithoutParameters { get; private set; }

​

        /// <inheritdoc/>

        public override string ToString()

        {

            return UrlWithoutParameters;

        }

    }