public async Task <IActionResult> Create(RegisterViewModel registerViewModel)
{
IActionResult actionResult = null;
if (this.ModelState.IsValid)
{
var user = new ApplicationUser
{
UserName = registerViewModel.UserName,
Email = registerViewModel.Email
};
var existentUser = await this.userManager
.FindByNameAsync(registerViewModel.UserName);
if (existentUser == null)
{
var identityResult = await this.userManager.CreateAsync(
user,
registerViewModel.Password);
if (identityResult.Succeeded)
{
actionResult = this.RedirectToAction(nameof(this.Index));
}
else
{
const string message =
"Password must be at least 6 characters, " +
"requires at least one non-alphanumeric character," +
"at least one digit, " +
"at least one lowercase character," +
"and at least one uppercase character.";
this.ModelState.AddModelError(
nameof(registerViewModel.Password),
message);
registerViewModel.ClearPassword();
actionResult = this.View(registerViewModel);
}
}
else
{
this.ModelState.AddModelError(
nameof(registerViewModel.UserName),
"The user name already exists");
registerViewModel.ClearPassword();
actionResult = this.View(registerViewModel);
}
}
else
{
registerViewModel.ClearPassword();
actionResult = this.View(registerViewModel);
}
return(actionResult);
}