protected virtual void OnDrawComplete(ProgressDataEventArgs e)
        {
            EventHandler handler = DrawCompleted;

            if (handler != null)
            {
                handler(this, e);
            }
        }
        void _backgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            if (_progressBar.Value == _progressBar.Maximum)
            {
                setMapTable();

                _backgroundWorker.DoWork -= _backgroundWorker_DoWork;
                _viewPanel.ControlAdded -= _viewPanel_ControlAdded;

                var args = new ProgressDataEventArgs() { CompletedElements = _progressBar.Value, TotalElement = _progressBar.Maximum };
                OnDrawComplete(args);
            }
        }
        void _backgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            if (_progressBar.Value == _progressBar.Maximum)
            {
                _backgroundWorker.DoWork -= _backgroundWorker_DoWork;

                var args = new ProgressDataEventArgs() { CompletedElements = _progressBar.Value, TotalElement = _progressBar.Maximum };
                OnDrawComplete(args);
            }
        }