static void Cd(string [] Input) { if (!Client.IsConnected) { Console.WriteLine("Please connect to a server first."); return; } if (Input != null && Input.Length > 1) { Input[0] = string.Join(" ", Input); } if (Input != null && Input.Length >= 1) { if (Input[0] == "..") { ToUpDir(); } else { Client.ChangeWorkDir(Input[0]); } } else { Client.PrintWorkDir(); } }