using System;

using System.Net;

using System.Net.Mail;

using System.IO;

​

public class Program

{

    public static void Main()

    {

        try

        {

            SendEmailWithAttachment();

        }

        catch (Exception ex)

        {

            Console.WriteLine($"Error: {ex.Message}");

        }

    }

​

    public static void SendEmailWithAttachment()

    {

        // SMTP server configuration

        var smtpClient = new SmtpClient("smtp.office365.com")

        {

            Port = 25,

            Credentials = new NetworkCredential("HR.Certificate@khalifafund.ae", "KCfh@@24!$!$"),

            EnableSsl = true,

        };

​

        // Create a new email message

        var mailMessage = new MailMessage

        {

            From = new MailAddress("HR.Certificate@khalifafund.ae"),

            Subject = "Emp Code: EMP524336 - Salary Certificate",

            Body = "Dear Emp, This is your certificate, Regards Team",

            IsBodyHtml = false,

        };

​

        mailMessage.To.Add("dev@ariextechnologies.com");

​

        // Create a sample attachment

        var attachmentContent = "Emp Code: EMP524336 - Salary Certificate";

        var attachmentStream = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(attachmentContent));

        var attachment = new Attachment(attachmentStream, "cer.txt");

​

        // Add the attachment to the email

        mailMessage.Attachments.Add(attachment);

​

        // Send the email

        smtpClient.Send(mailMessage);

​

        Console.WriteLine("Email sent successfully with attachment.");

    }

}

​