public AddNewProductController(AddNewProductScreen screen)
 {
     this._screen = screen;
     _dbc = DatabaseController.Instance;
     FillComboBox();
 }
 //Opens AddNewProductScreen when this button is pressed
 public void AddProduct()
 {
     var addNewProduct = new AddNewProductScreen();
     addNewProduct.ShowDialog();
     _screen.assortmentGridView.DataSource = null;
     _screen.assortmentGridView.DataSource = ProductModel.Result;
     FillData();
     this.RemoveFilters();
 }