deskhubsharprevised/DeskHubSharpRevised/BLL/EmailBLL.cs

using System;
using DeskHubSharpRevised.Models;
using MailKit;
using MailKit.Net.Smtp;
using MailKit.Security;
using MimeKit;

namespace DeskHubSharpRevised.BLL;

public class EmailBLL
{
    private string _name;
    private string _message;
    private string _emailText;

    public EmailBLL(string name, string message, string emailText)
    {
        _name = name;
        _message = message;
        _emailText = emailText;
    }

    /// <summary>
    /// Checks to see if Email is valid to send
    /// </summary>
    /// <returns></returns>
    private bool IsValidated()
    { 
        if (_name == "")
        {
            ErrorWindow err = new ErrorWindow();
            err.lbl_title.Content = "Oops.";
            err.txtblk_error.Text = "Please fill in your name.";
            err.Show();
            return false;
        }
        if (_message == "")
        {
            ErrorWindow err = new ErrorWindow();
            err.lbl_title.Content = "Oops.";
            err.txtblk_error.Text = "Please fill in your message to the developer.";
            err.Show();
            return false;
        }
        if (_emailText == "")
        {
            ErrorWindow err = new ErrorWindow();
            err.lbl_title.Content = "Oops.";
            err.txtblk_error.Text = "Please fill in your email.";
            err.Show();
            return false;
        }

        return true;
    }

    /// <summary>
    /// Creates message for user to send
    /// </summary>
    public void CreateMessage()
    {
        if (IsValidated())
        {
            try
            {
                var email = new Email();
                var err = new ErrorWindow();
                var message = new MimeMessage();

                message.From.Add(new MailboxAddress($"{_name}", email.FromEmail));
                message.To.Add(new MailboxAddress("Wyatt J. Miller", email.ToEmail));
                message.Subject = $"{_name} requires your attention!";
                message.Body = new TextPart("plain")
                {
                    Text = _message + " " + _emailText
                };

                using (var client = new SmtpClient())
                {
                    client.Connect("smtp.gmail.com", 465, SecureSocketOptions.SslOnConnect);
                    client.Authenticate(email.FromEmail, email.Password);
                    client.Send(message);
                    client.Disconnect(true);
                }

                err.lbl_title.Content = "Thank you!";
                err.txtblk_error.Text = "Thank you for sending your email! We have it and will reply shortly.";
                err.Show();
            }
            catch (Exception e)
            {
                ErrorWindow err = new ErrorWindow();
                Console.WriteLine("Exception caught in sending message: {0}",
                        e.ToString());
                err.Show();
            }
        }
    }
}