public async Task <AuthenticationResult> RegisterAsync( string userName, string password, string firstName, string lastName, string email, string phoneNumber) { var existsUserControlByUserName = await _applicationUserService.FindByNameAsync(userName); if (existsUserControlByUserName != null) { return(new AuthenticationResult { Errors = new[] { "User with this name already exist" }, }); } var newUser = new ApplicationUser() { UserName = userName, FirstName = firstName, LastName = lastName, Email = email, PhoneNumber = phoneNumber }; var userCreated = await _userManager.CreateAsync(newUser, password); if (!userCreated.Succeeded) { return(new AuthenticationResult { Errors = userCreated.Errors.Select(x => x.Description) }); } return(await GenerateAuthenticationResultForUserAsync(newUser)); }