numbercode

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Bankanumer
{
    class banki
    {
        static void Main(string[] args)
        {
            string numer = null;
            bool legal = false;
            while (legal != true)
            {
                Console.Write("Write the number(4-2-6): ");
                numer = Console.ReadLine();
                try
                {
                    if (numer.Length == 14)
                    {
                        //Start for
                        for (int counter = 0; counter < numer.Length; counter++)
                        {
                            //Check for numbers
                            if (counter >= 0 && counter < 4 || counter == 5 || counter == 6 || counter >= 8 && counter <= 13)
                            {
                                if (char.IsDigit(numer[counter]))
                                {
                                    legal = true;
                                }
                                else
                                {
                                    legal = false;
                                    break;
                                }
                            }
                            if (counter == 4 || counter == 7)
                            {
                                //Check for lines
                                if (numer[counter] == '-')
                                {
                                    legal = true;
                                }
                                else
                                {
                                    legal = false;
                                    break;
                                }
                            }
                        }//EndFor
                    }//EndIf
                    //Ef ekki 14 chars
                    else
                    {
                        Console.WriteLine("Vitlaust magn af stöfum");

                    }

                }//End Try
                catch
                {
                    Console.WriteLine("Error");
                }
            }//End while
            if (legal)
            {
                Console.WriteLine("Correctly Written");
            }
            else
            {
                Console.WriteLine("Wrongly Written");
            }
            //Press any key to exit.
            Console.ReadKey();
        }
    }
}