public async Task <IActionResult> OnPost([FromForm] InputUsernameModel Input, string returnUrl = null) { if (ModelState.IsValid) { TempData["RememberMe"] = false; IdentityUser userTmp = new IdentityUser(); userTmp.UserName = Input.UserName; var result = await _signInManager.SignInAsync(userTmp, false); if (result.Succeeded) { TempData["UserName"] = userTmp.UserName;; return(new PartialViewResult { ViewName = "LoginPassword", ViewData = new ViewDataDictionary <InputPasswordModel>(ViewData, new InputPasswordModel()), }); } if (result.RequiresTwoFactor) { _logger.LogInformation("User logged in."); return(new PartialViewResult { ViewName = "./LoginTwoFactor", ViewData = new ViewDataDictionary <InputTwoFactorModel>(ViewData, new InputTwoFactorModel()) }); } if (result.IsLockedOut) { return(BuildLockoutResult()); } else { ModelState.AddModelError(string.Empty, "Invalid login attempt."); return(new PartialViewResult { ViewName = "./LoginUserName", ViewData = new ViewDataDictionary <InputUsernameModel>(ViewData, new InputUsernameModel()) }); } } // If we got this far, something failed, redisplay form //return Page(); return(new PartialViewResult { ViewName = "./LoginUserName", ViewData = this.ViewData }); }