C#里List的用法

C#里List的用法
主程序代码：
static void Main(string[] args)
        {
           
            ClassList listClass = new ClassList();
            Console.WriteLine("请输入第个字符串");
            string a = Console.ReadLine();
            Console.WriteLine("请输入第二个字符串");
            string b = Console.ReadLine();

            foreach (string n in listClass.strList(a, b))
            {
                Console.WriteLine(n);
            }

  

类：
class ClassList
    {
        public List<string> strList(string str1,string str2)
        {
            string stra = str1 + str2;
            string strb = str2 + str1;
            string strc = str1 + str1;
            List<string> listStr = new List<string>();
            listStr.Add(stra);
            listStr.Add(strb);
            listStr.Add(strc);
            return listStr;
        }
    }