Is /main not allowed when building a module or library?

Question

C++ / C#

I got an error "it is not allowed to specify /main when building a module or library", how to fix it?
The code:

internal static class Program
  {
    [STAThread]
    private static void Main()
    {
      Application.EnableVisualStyles();
      Application.SetCompatibleTextRenderingDefault(false);
      Application.Run(new auth());
    }

Answer 1

Your project seems to be of the "library" type. You need to make the type be "Executable something there"