如何在另一个 class 方法中使用 class 和构造函数并将它们存储到我的列表中？ C#

Question

How can I use a class and constructor in a another class and method? I would like to be able to have a menu in the main method and add names to my list via the method Add_them().

One of the errors is that the name does not exist in the current context

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

namespace test
{
    class Poll
    {
        public string Name { get; set; }

        public Poll(string name)

        {
            this.Name = name;
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Menu");
            Console.WriteLine("Enter number for the option you want");
            Console.WriteLine("1. Add names");
            Console.WriteLine("2. Stop program");
            var polls = new List<string>();
            string userChoice = Console.ReadLine();
            int userNumber;
            int.TryParse(userChoice, out userNumber);
            if (userNumber == 1)
            {
                Add_them(polls);

            }
            else if (userNumber == 2)
            {
                End_it();
            }
        }

        static void Add_them(List<string> polls)
        {
            string u = null;
            do
            {
                Poll poll1 = new Poll(string name); // ERROR
                Console.WriteLine("Name:");
                poll1.Name = Console.ReadLine();
                Console.WriteLine("Write end to stop or enter and continue on");
                u = Console.ReadLine();
                polls.Add();
            } while (u != "end");
        }
        static void End_it()
        {
            System.Environment.Exit(1);
        }
    }
}

Answer 1

This line: Poll poll1 = new Poll(string name); needs to be changed to actually use a string, a string is anything inside double quotes "" so for example:

Poll poll1 = new Poll("Poll1");

if you want to set it to an empty value then the string class has a static member called Empty :

Poll poll1 = new Poll(string.Empty);