private void StockOutUI_Load(object sender, EventArgs e) { DataTable cadt = stockOutManager.GetCategoryStockOutBindingSource(); categoryStockInBindingSource.DataSource = cadt; categoryStockOutComboBox.SelectedValue = -1; messageLabel.Text = ""; messageLabel2.Text = ""; Notification(); timer2.Start(); dateLabel.Text = DateTime.Now.ToLongDateString(); timeLabel.Text = DateTime.Now.ToLongTimeString(); }