Send Attach

Por un lado
List<Attachment> attachments = BankInformations.GetAttachments(_supplierID);

        if (userIdAdd != null)
        {
            var user = Users.GetUser(userIdAdd.Value);
            EUS.Utils.EmailUtils.SendMail("sin.om", "son.com"+user.Email, subject,
                body, true, attachments);
        }
        else
            EUS.Utils.EmailUtils.SendMail("sin.om", "son.com", subject,
                body, true, attachments);





Por otro
public static List<Attachment> GetAttachments(int supplierID)
        {
            List<Attachment> attachments = new List<Attachment>();
            BankInformation bank = BankInformations.GetBankInformation(supplierID);
            if (bank.InfoAttachmentID.HasValue)
            {
                var file = BlobFiles.GetFile(bank.InfoAttachmentID.Value);
                if (file == null)
                    return new List<Attachment>();
                BlobFileTypeEmnu container = (BlobFileTypeEmnu)file.Container;
                BlobFileInfo blobInfo = CloudStorageManager.GetFileInfoB(container, file.BlobKey);
                MemoryStream stream = new MemoryStream(Libraries.Tools.ReadFully(blobInfo.Data));
                Attachment attachement = new Attachment(stream, file.Filename, blobInfo.ContentType);
                attachments.Add(attachement);
            }
            return attachments;
        }