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copied!<p>There is an easy way to do what you want. I'm always using it when writing apps that should have both a CLI and a GUI. You have to set your "OutputType" to "ConsoleApplication" for this to work.</p> <pre><code>class Program { [DllImport("kernel32.dll", EntryPoint = "GetConsoleWindow")] private static extern IntPtr _GetConsoleWindow(); /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main(string[] args) { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); /* * This works as following: * First we look for command line parameters and if there are any of them present, we run the CLI version. * If there are no parameters, we try to find out if we are run inside a console and if so, we spawn a new copy of ourselves without a console. * If there is no console at all, we show the GUI. * We make an exception if we find out, that we're running inside visual studio to allow for easier debugging the GUI part. * This way we're both a CLI and a GUI. */ if (args != null && args.Length > 0) { // execute CLI - at least this is what I call, passing the given args. // Change this call to match your program. CLI.ParseCommandLineArguments(args); } else { var consoleHandle = _GetConsoleWindow(); // run GUI if (consoleHandle == IntPtr.Zero || AppDomain.CurrentDomain.FriendlyName.Contains(".vshost")) // we either have no console window or we're started from within visual studio // This is the form I usually run. Change it to match your code. Application.Run(new MainForm()); else { // we found a console attached to us, so restart ourselves without one Process.Start(new ProcessStartInfo(Assembly.GetEntryAssembly().Location) { CreateNoWindow = true, UseShellExecute = false }); } } } </code></pre>

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