How to assign dynamic data in datagridview cell using C# code

I have a datagridview and it has 5 rows and I have bind it from database.

I am sending an email and i want to show dynamically in satus column only "Sent".

I dont want to update and insert any value in database. I want to do it from code only.

What I have tried:

I have tried so far.

<pre>public void sendMail()
        {
            foreach (DataGridViewRow rows in grdsend.Rows)
            {   
                    var subject = rows.Cells[0].Value.ToString();
                    var content = rows.Cells[1].Value.ToString();
                    var from = rows.Cells[2].Value.ToString();
                    var senderPassword = rows.Cells[3].Value.ToString();
                    var senderID = rows.Cells[4].Value.ToString();
                    var to = rows.Cells[5].Value.ToString();
                    var date = rows.Cells[6].Value.ToString();                

               var status = rows.Cells[7].Value = "Sending";
                // Now i want status variable value  "Sending" to show in datagridview cell



                MailMessage mail = new MailMessage();
                    SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
                    mail.To.Add(to.ToString());
                    mail.Subject = subject.ToString();
                    mail.Body = content.ToString();
                    mail.From = new MailAddress(from.ToString());
                    SmtpServer.Port = 587;
                    SmtpServer.EnableSsl = true;
                    SmtpServer.Credentials = new  System.Net.NetworkCredential(from.ToString(), senderPassword.ToString());
                    SmtpServer.Send(mail);
                    MessageBox.Show("Mail sent");
                }
             
            }