private void SendEmail(string btncommand) { try { var attachments = new List <FileAttachment>(); if (fileAttachment.HasFile) { var file = new FileAttachment { Name = fileAttachment.FileName, Content = Convert.ToBase64String(fileAttachment.FileBytes) }; attachments.Add(file); } var request = new SendEmailRequest { Body = this.txtBody.Text, FromEmailAddress = String.IsNullOrEmpty(this.txtFromEmail.Text) ? null : this.txtFromEmail.Text, Recipients = String.IsNullOrEmpty(this.txtTo.Text) ? null : this.txtTo.Text.Split(';'), CarbonCopyList = String.IsNullOrEmpty(this.txtCC.Text) ? null : this.txtCC.Text.Split(';'), SessionId = "6C06251C-377E-4803-A96F-5CC10490748B", Subject = this.txtSubject.Text, Attachments = attachments.Count > 0 ? attachments.ToArray() : null }; System.Net.ServicePointManager.ServerCertificateValidationCallback = ((sender, certificate, chain, sslPolicyErrors) => true); if (btncommand == "Sendmail") { using (var proxy = new EmailServiceClient()) { var response = proxy.SendEmail(request); if (response != null && response.IsSuccess) { this.errorText.Visible = true; this.errorText.Text = "Email succeeded."; return; } this.errorText.Visible = true; this.errorText.Text = "Email failed."; } } else { using (var proxy = new EmailServiceClient()) { var response = proxy.SendEmailWithBadAddressCheck(request); if (response != null && response.IsSuccess) { this.errorText.Visible = true; this.errorText.Text = "Email succeeded."; } else { this.errorText.Visible = true; this.errorText.Text = "Email failed."; } if (response.InvalidRecipients.BadDomains.Count() != 0) { this.errorText.Text += String.Format("\t Email address with bad domains list:-\t {0}", String.Join(",", response.InvalidRecipients.BadDomains)); } } } } catch (FaultException <EmailServiceFault> fxException) { this.errorText.Visible = true; this.errorText.Text = fxException.Detail.ToString(); } catch (Exception ex) { this.errorText.Visible = true; this.errorText.Text = ex.Message + ex.StackTrace; } }