private void OnEncryptionSuccsessMsg(EncryptionSuccsessMsg msg)
        {
            if (_uploadToDropboxChecked)
            {
                _logger.Info("upload to Dropbox checked");

                _logger.Info("get dropbox access from database");
                var dropboxAccess = _database.GetSingleByName<DropboxAccess>(DropboxAccess.ObjectName);

                if (dropboxAccess != null)
                {
                    string filename = Path.GetFileName(msg.TargetPath);

                    _logger.Info("read file content in byte array");
                    byte[] content;
                    using (FileStream fileStream = File.OpenRead(msg.TargetPath))
                    {
                        content = new byte[fileStream.Length];

                        fileStream.Read(content, 0, (int) fileStream.Length);
                        fileStream.Close();
                    }

                    _messenger.Send(new StartUploadToDropboxMsg());
                    _logger.Info(string.Format("start uploading file:{0}", filename));

                    _dropboxService.Upload(dropboxAccess.AccessToken, filename, content, OnUploadSuccess);
                }
            }
        }
 private void OnEncryptionSuccsessMsg(EncryptionSuccsessMsg msg)
 {
     MessageBox.Show(
         "File encrypted!", "Success",
         MessageBoxButton.OK, MessageBoxImage.Asterisk);
 }