(1) DataManager.cs using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ConsoleApp1 { public class DataManager { public static readonly DataManager Instance = new DataManager(); //대리자 멤버변수로 생성 public Action loadComplete; //생성자 private DataManager() { } public void LoadDatas() { Console.WriteLine("데이터 로드중..."); Console.Write..