[DllImport("kernel32", SetLastError=true, ExactSpelling=true)]
static extern bool AllocConsole();
This is "AllocConsole", not "AttachConsole". They are different APIs. Would whoever keeps changing to back to AttachConsole after we fix it, please cut it out. Furthermore, it does Set Last Error and there is no "AllocConsoleA" or "AllocConsoleW" methods, so the parameters to DllImport are also now correct, so please stop changing those as well.
This is a simple way to create a "dual-mode" application can be a console or windows forms application.
// Compile as a Windows Forms app.
static void Main(string args)
if (args.Length < 1)
Console.Write("Press a key to continue...");
Do you know one? Please contribute it!