[DllImport("kernel32.dll", SetLastError = true)]
private static extern bool FreeConsole();

[DllImport("kernel32.dll", SetLastError = true)]
private static extern bool AllocConsole();

static void Main(string[] args)
{
    /* do something here
        ...
        ...
        ...
   */
   AllocConsole();

   Console.WriteLine("something");
   // wait for input
   Console.ReadLine();

   FreeConsole();
}

static bool TryGetParentProcessId(out int id)
{
	try
	{
		int ownId = Process.GetCurrentProcess().Id;
		ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_Process WHERE ProcessId=" + ownId);
		foreach (ManagementBaseObject row in searcher.Get())
		{
			id = (int)(uint)row["ParentProcessId"];
			return true;
		}
	}
	catch
	{

	}
	id = 0;
	return false;
}

static void Main(string[] args)
{
	int id;
	if (TryGetParentProcessId(out id))
		Console.WriteLine(Process.GetProcessById(id).ProcessName+ " called me.");
	else
		Console.WriteLine("Unable to identify caller.");
}