using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Collections; namespace coolpc { public class category { public int ctId; public string ctName; //請問要怎麼把pdList宣告為product型別的ArrayList? public (product)ArrayList pdList; //或者,c#有沒有其他container接近於vector可以設定型別的? 拜託不要List... public void addPd(product i){ pdList.Add(i); } } public class product { public int pdId; public string pdName; public string category; public int ctId; public string title; public int price; public string imgUrl; public int realPrice; public string pdIntro; } }