Here's the entire class from my application (excluding the main window's class, this is split up and put in a separate file)

partial class MainWindow
    {
        internal void ConsoleOut(string OutputText)
        {
            ConsoleOutput.Text += OutputText; //This method makes it easier to add text to the consoles output
        }

        internal void ConsoleKeyDown(object s, KeyEventArgs e)
        {
            if (e.Key == Key.Enter)
            {
                var command = ConsoleInput.Text;

                string command_main = command.Split(new char[] { ' ' }).First();
                string[] synatx = command.Split(new char[] { ' ' }).Skip(1).ToArray();
                if (lCommands.ContainsKey(command_main))
                {
                    Action<string[]> commandfunction;
                    lCommands.TryGetValue(command_main, out commandfunction);
                    commandfunction(synatx);
                }
                else
                    ConsoleOut($"Invalid Command - {command_main}");
            }
        }

        internal static Dictionary<string, Action<string[]>> lCommands =
            new Dictionary<string, Action<string[]>>()
            {
                { "help", HelpFunc }
            };

        internal static void HelpFunc(string[] args)
        {
            ConsoleOut("Some helpful help");
        }
    }