protected void btnFinalreminderemail_Click(object sender, EventArgs e) { DataTable dt = dlbooking.finalpaymentremidermail(blbooking); if (dt != null && dt.Rows.Count > 0) { for (int i = 0; i < dt.Rows.Count; i++) { sendMailforfinal(dt.Rows[i]["Email"].ToString(), dt.Rows[i]["FirstName"].ToString(), Convert.ToInt32(dt.Rows[i]["BookingID"].ToString())); } lblMsg.ForeColor = System.Drawing.Color.Green; lblMsg.Text = "Final Reminder mail sent successfully"; } }