By default a WinForms application has a Main function without parameters

To utilize command line arguments simply modify the implementation of your Main function in Program.cs

        static void Main(string[] args)
        {
            // command line args
            //

            for (int iArg = 0; iArg < args.Length; iArg++)
            {
                Console.WriteLine("args[{0}] == {1}", iArg, args[iArg]);
            }

            ....

        }