using System;

using System.IO;

namespace Rextester{

    public class Program{

        private static string PathType = "FTP";

        public static string CombinePath(params string[] paths)

        {

            char separatorChar = Path.DirectorySeparatorChar;

            if (PathType != "NP" && PathType != "DIR")

            {

                separatorChar = Path.AltDirectorySeparatorChar;

            }

            string resultPath = string.Empty;

            foreach (string path in paths)

            {

                if (string.IsNullOrEmpty(resultPath))

                    resultPath = path.Trim(separatorChar);

                else

                    resultPath = Path.Combine(resultPath + separatorChar, path.Trim(separatorChar));

            }

            return resultPath;

        }

​

        public static void Main(string[] args){

            Console.WriteLine(Path.DirectorySeparatorChar);

            Console.WriteLine(Path.AltDirectorySeparatorChar);

            Console.WriteLine(CombinePath("prova/", "/pippo/", "pluto\\", "File.txt"));

            string input = "FTP.ARCHIVAGROUP.IT:2411/DB/008939_13171830154/";

            string[] stringSeparators = new string[] { "/" };

            string[] temp = input.Split(stringSeparators, 2, StringSplitOptions.None);

            for (int i = 0; i<temp.Length; i++)

            {

                Console.WriteLine(string.Format("temp[{0}] = {1}", i.ToString(), temp[i]));

            }

            string[] indirizzo = temp[0].Split(':');

            for (int i = 0; i<indirizzo.Length; i++)

            {

                Console.WriteLine(string.Format("indirizzo[{0}] = {1}", i.ToString(), indirizzo[i]));

            }

        }

    }

}