using System.Collections; ArrayList arr = new ArrayList(); arr.Add("123"); arr.Add("abc"); string s = "abc"; bool b = arr.Contains(s); Console.WriteLi ...
解決了這個問題:《winForm下,fastReport.net 從.net framework 升級到.net5遇到的錯誤“Operation is not supported on this platform.”》 本文內容轉載自:https://www.fcnsoft.com/Home/Sho ...