Website parser

parser.cs

using System;
using System.Security.Cryptography;
using System.Text;
using RestSharp;
using RestSharp.Authenticators;

namespace httpsPriceParser
{
    class Program
    {
        public static string CreateMD5(string input)
        {
            // Use input string to calculate MD5 hash
            using (System.Security.Cryptography.MD5 md5 = System.Security.Cryptography.MD5.Create())
            {
                byte[] inputBytes = System.Text.Encoding.ASCII.GetBytes(input);
                byte[] hashBytes = md5.ComputeHash(inputBytes);

                // Convert the byte array to hexadecimal string
                StringBuilder sb = new StringBuilder();
                for (int i = 0; i < hashBytes.Length; i++)
                {
                    sb.Append(hashBytes[i].ToString("X2"));
                }
                return sb.ToString();
            }
        }

        public static string GetStringBetween(string strSource, string strStart, string strEnd)
        {
            if (strSource.Contains(strStart) && strSource.Contains(strEnd))
            {
                int Start, End;
                Start = strSource.IndexOf(strStart, 0) + strStart.Length;
                End = strSource.IndexOf(strEnd, Start);
                return strSource.Substring(Start, End - Start);
            }

            return "";
        }

        static void Main(string[] args)
        {
            /*
            Console.WriteLine("Hello World!");

            var client = new RestClient("https://api.bt.xy/v4");
            //client.Authenticator = new HttpBasicAuthenticator("username", "password");

            //var request = new RestRequest("statuses/home_timeline.json", DataFormat.Json);
            string urlMD5 = CreateMD5("");
            var request = new RestRequest("btceur/rates#API_KEY#"+urlMD5, DataFormat.Json);

            var response = client.Get(request);
            Console.WriteLine("Hello World!");
            */

            var client = new RestClient("https://www.bt.xy/de");

            var request = new RestRequest("", DataFormat.None);

            var response = client.Get(request);

            string euroKurs = GetStringBetween(response.Content, "ticker_price", "€").Split('>')[1];
             Console.WriteLine(euroKurs);

        }
    }
}