public void readSelectionFromFile(Selection sel)
        {
            string line;

            string[] array   = new string[10000];
            bool     isRight = false;
            int      cnt     = 0;

            try {
                using (StreamReader reader = new StreamReader("Selections.txt"))
                {
                    while ((line = reader.ReadLine()) != null)
                    {
                        if (sel.GetType() == typeof(EquableSelection) && line == "EquableSelection")
                        {
                            line = reader.ReadLine();
                            while (line != "end")
                            {
                                array[cnt] = line;
                                cnt++;
                                line = reader.ReadLine();
                            }

                            array   = array.Where(x => !string.IsNullOrEmpty(x)).ToArray();
                            isRight = true;

                            break;
                        }

                        if (sel.GetType() == typeof(ExponentialSelection) && line == "ExponentialSelection")
                        {
                            line = reader.ReadLine();
                            while (line != "end")
                            {
                                array[cnt] = line;
                                cnt++;
                                line = reader.ReadLine();
                            }

                            array   = array.Where(x => !string.IsNullOrEmpty(x)).ToArray();
                            isRight = true;

                            break;
                        }

                        if (sel.GetType() == typeof(NormalSelection) && line == "NormalSelection")
                        {
                            line = reader.ReadLine();
                            while (line != "end")
                            {
                                array[cnt] = line;
                                cnt++;
                                line = reader.ReadLine();
                            }

                            array   = array.Where(x => !string.IsNullOrEmpty(x)).ToArray();
                            isRight = true;

                            break;
                        }
                    }

                    if (isRight)
                    {
                        sel.AddFromStringArray(array);
                        reader.Close();
                        return;
                    }

                    Console.WriteLine("This type of selection in file dont exsits");
                    reader.Close();
                }
            }

            catch (Exception ex) {
                Console.WriteLine(ex.Message);
            }
        }