ASP.NET How to return a view and filecontents

  [HttpPost]
  [Route("Builder/ZaBuildor")]
  public IActionResult Build(BuilderViewModel bvm)
  {
      try
      {
          DragonSim.Builder.Build.Compile(bvm);
          var filePath = Path.Combine(Paths.BuildPath, bvm.Filename + ".bat");
          var fileBytes = System.IO.File.ReadAllBytes(filePath);
          var fileContentResult = File(fileBytes, "application/octet-stream", bvm.Filename + ".bat");

          return Json(new { success = true, message = "Build successful", fileContent = Convert.ToBase64String(fileBytes) });
      }
      catch (Exception ex)
      {
          return Json(new { success = false, message = "Error building stub: " + ex.Message });
      }
      finally
      {
          System.IO.File.Delete(Path.Combine(Paths.BuildPath, bvm.Filename + ".bat"));
          System.IO.File.Delete(Path.Combine(Paths.BuildPath, "DragonSim.exe"));
      }
  }