Filling in arrays of personal files, formatted output, search by last name and deleting personal files.

Personnel accounting

internal class Program
{
    static void Main(string[] args)
    {
        const string CommandAddPerson = "1";
        const string CommandShowData = "2";
        const string CommandRemovePerson = "3";
        const string CommandSearchPerson = "4";
        const string CommandExit = "5";

        bool isOpen = true;
        int textEnterLine = 20;
        string[] personList = { "Alex Pirson Gate", "Morgan Freeman Ohoho", "Eva 01 Anime" };
        string[] positionList = { "driver", "person", "action animation" };
        string enterCommand;
        string menuText = $"Enter comand number to use it:\n" +
            $"{CommandAddPerson} - to Add Person\n" +
            $"{CommandShowData} - to show full list of persons with their position info\n" +
            $"{CommandRemovePerson} - to remove persons data from base by his number in list\n" +
            $"{CommandSearchPerson} - to search person by his surname in our base\n" +
            $"{CommandExit} - to leave the program\n";

        while (isOpen)
        {
            Console.WriteLine(menuText);
            Console.SetCursorPosition(0, textEnterLine);
            enterCommand = Console.ReadLine();

            switch (enterCommand)
            {
                case CommandAddPerson:
                    AddPerson(ref personList, ref positionList);
                    break;

                case CommandShowData:
                    ShowPersonsList(personList, positionList);
                    break;

                case CommandRemovePerson:
                    RemovePerson(ref personList, ref positionList);
                    break;

                case CommandSearchPerson:
                    SearchPerson(personList, positionList);
                    break;

                case CommandExit:
                    isOpen = false;
                    break;

                default:
                    Console.WriteLine("\nError, incorrect value!");
                    break;
            }

            Console.WriteLine("\nClick any key");
            Console.ReadKey();
            Console.Clear();
        }
    }

    static void SearchPerson(string[] persons, string[] position)
    {
        Console.Write("Enter surname to search: ... ");
        char space = ' ';
        string searchSurname = Console.ReadLine();
        string[] surname;
        bool searchSucceded = false;

        for (int i = 0; i < persons.Length; i++)
        {
            surname = persons[i].Split(space);

            if (surname[0].ToLower() == searchSurname.ToLower())
            {
                Console.Write(persons[i] + "\n" + position[i]);
                searchSucceded = true;
            }
        }

        if (!searchSucceded)
        {
            Console.WriteLine("There is no such person in our base");
        }
    }

    static void RemovePerson(ref string[] persons, ref string[] positions)
    {
        Console.WriteLine("\nEnter persons number in list to remove the data");
        int index = int.Parse(Console.ReadLine());

        if (index > persons.Length || index < 0)
        {
            Console.WriteLine("Error wrong number!");
        }
        else
        {
            index--;

            AssignArray(ref persons, false, index);
            AssignArray(ref positions, false, index);
        }
    }

    static void ShowPersonsList(string[] persons, string[] positions)
    {
        for (int i = 0; i < persons.Length; i++)
        {
            Console.Write($"{i + 1}. {persons[i]} - {positions[i]}; ");
        }
    }

    static void AddPerson(ref string[] personsList, ref string[] positionsList)
    {
        Console.Write("\nEnter persons name: ... ");
        string name = Console.ReadLine();
        Console.Write("\nEnter persons position: ... ");
        string position = Console.ReadLine();

        AssignArray(ref personsList);
        AssignArray(ref positionsList);

        personsList[personsList.Length - 1] = name;
        positionsList[positionsList.Length - 1] = position;
    }

    static void AssignArray(ref string[] array, bool adding = true, int index = 0)
    {
        int length;

        if (!adding)
        {
            length = -1;
        }
        else
        {
            length = 1;
        }

        string[] newArray = new string[array.Length + length];

        for (int i = 0; i < array.Length && i < newArray.Length; i++)
        {
            if (!adding && i == index)
            {
                newArray[i] = array[i+1];
                index++;
            }
            else
            {
                newArray[i] = array[i];
            }
        }

        array = newArray;
    }
}