private void _backWorkerXML_DoWork(object sender, DoWorkEventArgs e)
 {
     try
     {
         OCTT_EfeeOperations.DoExportXml(_backWorker, e);
     }
     catch (Exception ex) { MessageBox.Show(ex.StackTrace); }
 }
 void _backWorkerJSON_DoWork(object sender, DoWorkEventArgs e)
 {
     try
     {
         OCTT_EfeeOperations.DoExportJson(_backWorker, e);
     }
     catch { }
 }
 void _backWorkerServer_DoWork(object sender, DoWorkEventArgs e)
 {
     try
     {
         OCTT_EfeeOperations.DoPostOnServer(_backWorker, e,
                                            new[] { _serverURLBox, _userNameTextBox, _passwordTextBox },
                                            new[] { _exportJSON, _postOnServerButton, _exportXML });
     }
     catch (Exception ex)
     {
     }
 }