Get and Post of Registration Method

gistfile1.txt

//GET
[AllowAnonymous]
        public ActionResult Register(string message )
        {
            var myName = new SelectList(_context.Roles.ToList());
            if (!Request.IsAuthenticated)
            {
                ViewBag.Message = message;
                if (!User.IsInRole("Administrators"))
                {
                    myName = new SelectList(_context.Roles.Where(x => x.Name == "Registered Users").ToList(), "Name", "Name");
                }
                else 
                {
                    myName = new SelectList(_context.Roles.ToList(), "Name", "Name");
                }
            }
            else 
            {
                ViewBag.Message = message;
                if (User.IsInRole("Administrators"))
                {
                    myName = new SelectList(_context.Roles.ToList(), "Name", "Name");
                }
                else
                {
                    return RedirectToAction("Index", "Orders");
                }
            }

            ViewBag.Name = myName;
            return View();
        }

        //
        // POST: /Account/Register
        [HttpPost]
        [AllowAnonymous]
        [ValidateAntiForgeryToken]
        public async Task<ActionResult> Register(RegisterViewModel model, string message)
        {
            if (ModelState.IsValid)
            {
                if (!_context.Users.Any(x => x.UserName == model.UserName))
                {
                    var user = new ApplicationUser { UserName = model.UserName };
                    user.Email = model.Email;
                    user.EmployeeId = model.EmployeeId;
                    var result = await UserManager.CreateAsync(user, model.Password);
                    if (result.Succeeded)
                    {
                        await this.UserManager.AddToRoleAsync(user.Id, model.Name);
                        string callbackUrl = await SendEmailConfirmationTokenAsync(user.Id, "Account confirmation");                        
                        if (User.IsInRole("Administrators"))
                        {
                            return RedirectToAction("Index", "User");
                        }
                        else
                        {
                            AuthenticationManager.SignOut(DefaultAuthenticationTypes.ApplicationCookie);
                            return RedirectToAction("UserLogin", "Account");
                        }
                    }
                    AddErrors(result);
                }
                else
                {
                    
                    if (User.IsInRole("Administrators"))
                    {
                        return RedirectToAction("Index", "User", new { message = "User already exists" });
                    }
                    else
                    {
                        return RedirectToAction("Register", "Account", new { message = "User already exists" });
                    }
                }

            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }