asp.net core user registration with email confirmation

Marius Vasile

5y2.1k.NET

I am trying to add email confirmation to user registration. I 've done the following so far

Added to Register.cshtml.cs

var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
code = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
var callbackUrl = Url.Page("/Account/ConfirmEmail",
pageHandler: null,
values: new { area = "Identity", userId = user.Id, code = code, returnUrl = returnUrl },
protocol: Request.Scheme);
await _emailSender.SendEmailAsync(Input.Email, "Confirm your email",
$"Please confirm your account by clicking here.");

Create a Services folder and class EmailServices.cs

using MailKit.Net.Smtp;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Options;
using MimeKit;
using System;
using System.Threading.Tasks;
using RoSafety.Services;
namespace RoSafety.Services
{
public interface IMailer
{
Task SendEmailAsync(string email, string subject, string body);
}
public class Mailer : IMailer
{
private readonly SmtpSettings _smtpSettings;
private readonly IWebHostEnvironment _env;
public Mailer(IOptions smtpSettings, IWebHostEnvironment env)
{
_smtpSettings = smtpSettings.Value;
_env = env;
}
public async Task SendEmailAsync(string email, string subject, string body)
{
try
{
var message = new MimeMessage();
message.From.Add(new MailboxAddress(_smtpSettings.SenderName, _smtpSettings.SenderEmail));
message.To.Add(new MailboxAddress(email));
message.Subject = subject;
message.Body = new TextPart("html")
{
Text = body
};
using (var client = new SmtpClient())
{
client.ServerCertificateValidationCallback = (s, c, h, e) => true;
if (_env.IsDevelopment())
{
await client.ConnectAsync(_smtpSettings.Server, _smtpSettings.Port, true);
}
else
{
await client.ConnectAsync(_smtpSettings.Server);
}
await client.AuthenticateAsync(_smtpSettings.UserName, _smtpSettings.Password);
await client.SendAsync(message);
await client.DisconnectAsync(true);
}
}
catch (Exception e)
{
throw new InvalidOperationException(e.Message);
}
}
}
public class SmtpSettings
{
public string Server { get; set; }
public int Port { get; set; }
public string SenderName { get; set; }
public string SenderEmail { get; set; }
public string UserName { get; set; }
public string Password { get; set; }
}
}

added smtp settings to json

"SmtpSettings": {
"Server": "smtp.gmail.com",
"Port": 587,
"SenderName": "admin",
"SenderEmail": "[email protected]",
"UserName": "[email protected]",
"Password": "password"
},

and startup

services.AddIdentity(options =>
{
options.SignIn.RequireConfirmedAccount = true;
options.User.RequireUniqueEmail = true;
options.Password.RequiredLength = 8;
options.Password.RequireDigit = true;
options.Password.RequireUppercase = true;
})
.AddDefaultUI()
.AddRoles()
.AddDefaultTokenProviders()
.AddEntityFrameworkStores();
services.Configure(Configuration.GetSection("SmtpSettings"));
services.AddSingleton();

but a new account is still automatically confirmed and I don't receive email for confirmation. Can anybody see what is wrong please?

6 Replies

Know the answer? Post it — somebody with the same question will find it here.

Marius Vasile5y ago
Ok, I changed the login form and added UserName instead of Email and it worked. But why is no longer working for email while there was no change?
+1
Marius Vasile5y ago
Was working very well, I revert to original code, before the email thing and is working, when I add
var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
                        code = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
                        var callbackUrl = Url.Page(
                            "/Account/ConfirmEmail",
                            pageHandler: null,
                            values: new { area = "Identity", userId = user.Id, code = code, returnUrl = returnUrl },
                            protocol: Request.Scheme);

                        await _emailSender.SendEmailAsync(Input.Email, "Confirm your email",
                            $"Please confirm your account by clicking here.");
is not working
+1
Sachin Singh5y ago
passwords are encrypted in aspnetUsers table , so before comparing password , do encoding , or show your login code.
was that working earlier?
+1
Marius Vasile5y ago
Made it work by having this in the register.cshtml.cs
if (result.Succeeded)
{
    _logger.LogInformation("User created a new account with password.");
    var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
    code = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));

    var callbackUrl = Url.Page("/Account/ConfirmEmail",
                            pageHandler: null,
                            values: new { area = "Identity", userId = user.Id, code = code, returnUrl = returnUrl },
                            protocol: Request.Scheme);

     await _emailSender.SendEmailAsync(Input.Email, "Confirm your email",
     $"Please confirm your account by clicking here.");

     if (_userManager.Options.SignIn.RequireConfirmedAccount)
     {
         return RedirectToPage("RegisterConfirmation", new { email = Input.Email, returnUrl = returnUrl });
     }
     else
     {
         await _signInManager.SignInAsync(user, isPersistent: false);
         return LocalRedirect(returnUrl);
     }
}
and the EmailServices
public class Mailer : IEmailSender
{
    private readonly SmtpSettings _smtpSettings;
    private readonly IWebHostEnvironment _env;

    public Mailer(IOptions smtpSettings, IWebHostEnvironment env)
    {
        _smtpSettings = smtpSettings.Value;
        _env = env;
    }

    public async Task SendEmailAsync(string email, string subject, string body)
    {
        try
        {
            var message = new MimeMessage();
            message.From.Add(new MailboxAddress(_smtpSettings.SenderName, _smtpSettings.SenderEmail));
            message.To.Add(new MailboxAddress(email));
            message.Subject = subject;
            message.Body = new TextPart("html")


            {
                Text = body
            };

            using (var client = new SmtpClient())
            {
                client.ServerCertificateValidationCallback = (s, c, h, e) => true;

                if (_env.IsDevelopment())
                {
                    await client.ConnectAsync(_smtpSettings.Server, _smtpSettings.Port, true);
                }
                else
                {
                    await client.ConnectAsync(_smtpSettings.Server, _smtpSettings.Port, true);
                }

                await client.AuthenticateAsync(_smtpSettings.UserName, _smtpSettings.Password);
                await client.SendAsync(message);
                await client.DisconnectAsync(true);
            }
        }
        catch (Exception e)
        {
            throw new InvalidOperationException(e.Message);
        }
    }
}
I receive email with confirmation link, click on the link makes true in the identity table for email confirmation, I can even change the password with email confirmation but....when I try to login the password is not recognized. any ideas?
+1
Sachin Singh5y ago
check your browser console , there must be some gmail related error.
+1
Marius Vasile5y ago
I forgot to mention that also MailKit is also installed
+1