private void stopTrackingToolStripButton_Click(object sender, EventArgs e) { RefreshTimer.Stop(); TimeTrackerData item = TrackingService.Stop(); // fill in category if (categoryToolStripComboBox.Text.Length > 0) { item.Category = new TrackedDataCategory(categoryToolStripComboBox.Text.Trim(' ')); } Data.Add(item); RefreshTrackingButtons(); RefreshCategoryPicker(); }