public async Task <IActionResult> OnGetAsync(string returnUrl)
{
await _applicationUserManager.CheckSeed();
// build a model so we know what to show on the login page
loginViewModel = await BuildLoginViewModelAsync(returnUrl);
if (loginViewModel.IsExternalLoginOnly)
{
// we only have one option for logging in and it's an external provider
return(RedirectToAction("Challenge", "External", new { provider = loginViewModel.ExternalLoginScheme, returnUrl }));
}
return(Page());
}