private void ShowData()
{
this.lblNumEmployee.Text = EmployeeController.NumEmployee();
this.lblNumCustomer.Text = CustomerController.NumCustomer();
this.lblNumProvider.Text = ProviderController.NumProvider();
this.lblNumCategory.Text = CategoryController.NumCategory();
this.dataListStock.DataSource = ItemController.LowStockItems();
this.dataListLastSales.DataSource = SaleController.ShowLastSales();
this.dataListTopEmp.DataSource = EmployeeController.ShowTopEmployee();
}
