public async Task<ActionResult> Register(RegisterViewModel model)
        {
            if (!ModelState.IsValid) return View(model);

            var user = new ApplicationUser { UserName = model.Username, Email = model.Email };
            IdentityResult result = await IdentityRepository.UserManager.CreateAsync(user, model.Password);

            if (result.Succeeded)
            {
                await IdentityRepository.SignInManager.SignInAsync(user, isPersistent: false, rememberBrowser: false);

                // For more information on how to enable account confirmation and password reset please visit http://go.microsoft.com/fwlink/?LinkID=320771
                // Send an email with this link
                string code = await IdentityRepository.UserManager.GenerateEmailConfirmationTokenAsync(user.Id);
                string callbackUrl = Url.Action("ConfirmEmail", "Account", new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);

                await IdentityRepository.UserManager.SendEmailAsync(user.Id, "Confirm your account", callbackUrl);

                return RedirectToAction("Index", "Home");
            }

            AddErrors(result);

            return View(model);
        }
        public async Task<ActionResult> Create(RegisterViewModel registerViewModel, params string[] selectedRoles)
        {
            if (!ModelState.IsValid) return RedirectToAction("Index");

            var model = new UsersHandlerCreateViewModel
            {
                RegisterViewModel = registerViewModel,
                SelectedRoles = await IdentityRepository.RoleManager.Roles.ToListAsync()
            };

            var user = new ApplicationUser { UserName = registerViewModel.Username, Email = registerViewModel.Email };

            IdentityResult userResult = await IdentityRepository.UserManager.CreateAsync(user, registerViewModel.Password);

            if (!userResult.Succeeded)
            {
                AddErrors(userResult);
                return View(model);
            }

            // Confirm email manualy
            string token = await IdentityRepository.UserManager.GenerateEmailConfirmationTokenAsync(user.Id);
            await IdentityRepository.UserManager.ConfirmEmailAsync(user.Id, token);

            //await IdentityRepository.SignInManager.SignInAsync(user, isPersistent: false, rememberBrowser: false);
            //string code = await IdentityRepository.UserManager.GenerateEmailConfirmationTokenAsync(user.Id);
            //string callbackUrl = Url.Action("ConfirmEmail", "Account", new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);
            //await IdentityRepository.UserManager.SendEmailAsync(user.Id, "Confirm your account", callbackUrl);

            if (selectedRoles != null)
            {
                IdentityResult rolesResult = await IdentityRepository.UserManager.AddToRolesAsync(user.Id, selectedRoles);

                if (!rolesResult.Succeeded)
                {
                    ModelState.AddModelError("", rolesResult.Errors.First());
                    return View(model);
                }
            }

            return RedirectToAction("Index");
        }