public void DeleteCatagory(Predicate <Catagory> query)
{
int numberOfElementsRemoved = _catagories.RemoveAll(query);
if (numberOfElementsRemoved > 0)
{
fileManager.DeleteData(CatagoryConverter.ConvertToString(_catagories));
}
}
public void DeleteProduct(Predicate <Product> query)
{
int numberOfElementsRemoved = _products.RemoveAll(query);
if (numberOfElementsRemoved > 0)
{
fileManager.DeleteData(ProductConverter.ConvertToString(_products));
}
}