C#聊天程序(3) break; case 'C': port = 5150; String address = "127.0.0.1"; client = true; if(args.Length > 1){ address = args[1]; port = Convert.ToInt32(args[2]); } endPoint = new IPEndPoint(Dns.Resolve(address).AddressList[0], port); break; default: ShowUsage(); return false; } }catch{