Списак

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication20_Practic3
{
    class Program
    {
        public struct Person
        {

            private string fio;
            public string Fio
            {
                set
                {
                    this.fio = value;
                }
                get
                {

                    var fioDetaile = this.fio.Split(new[] { " " }, StringSplitOptions.RemoveEmptyEntries);
                    var Name = fioDetaile[0];
                    var Family = fioDetaile[1];
                    var SecondName = fioDetaile[2];
                    return $"{Name}' '{Family}' '{SecondName}";
                }
            }
            private int age;
            public int Age { get { return this.age; } }
            public string Email { get; private set; }
            public override string ToString()
            {
                return $"{CapitalizeAllWords(this.fio)}\t{this.age}\t{this.Email}";
            }

            public Person(string csvPerson)
            {
                var personArray = csvPerson.Split(';');
                this.fio = personArray[0];
                string z = String.Join("", personArray[1].Split(',', ' '));
                this.age = Convert.ToInt32(z);
                string y = String.Join("", personArray[2].Split(' '));
                this.Email = y;
            }
            public string CapitalizeAllWords(string s)
            {
                var sb = new StringBuilder(s.Length);
                bool inWord = false;
                foreach (var c in s)
                {
                    if (char.IsLetter(c))
                    {
                        sb.Append(inWord ? char.ToLower(c) : char.ToUpper(c));
                        inWord = true;
                    }
                    else
                    {
                        sb.Append(c);
                        inWord = false;
                    }
                }
                return sb.ToString();
            }

            internal string Substring()
            {
                throw new NotImplementedException();
            }
        }
        static void Main(string[] args)
        {
            //const string text = @"Иванов иван иванович; 45;[email protected]
            //    Петров Петр петрович; ,76,;
            //    Сидоров Сидор Сидорович; 14; еще_не_завел@qwerty.com";

            string path = @"text.txt";

            string[] TextLines = File.ReadAllText(path, Encoding.Default).Split('\n');

           // var TextLines = text.Split('\n');

            Person[] info = new Person[TextLines.Length];
            for (var i = 0; i < TextLines.Length; i++)
                info[i] = new Person(TextLines[i]);



            for (var i = 0; i < info.Length - 1; i++)
            {
                for (var j = i + 1; j < info.Length; j++)
                {
                    if (info[i].Age > info[j].Age)
                    {
                        var temp = info[i];
                        info[i] = info[j];
                        info[j] = temp;
                    }
                }
            }

            for (var i = 0; i < info.Length; i++)
                Console.WriteLine(info[i]);
        }
    }
}