EnvelopeGenerator/EnvelopeGenerator.Web/Pages/ShowEnvelope.cshtml.cs

using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;

namespace EnvelopeGenerator.Web.Pages
{
    public class ShowEnvelopeModel : PageModel
    {
        public void OnGet()
        {
        }
    }
}