public void CreateProd()
{
bool productNumberExist;
if (productNumberExist = ProductMethods.CheckProductNumber(LocalProductNumber))
{
MessageBox.Show("Dette produktnummer eksisterer allerede. Prøv et nyt");
}
else
{
Product.ProductID = LocalProductNumber.ToString();
Product.ProductGroup = SelectedMainGroup + "-" + SelectedSubGroup;
ProductMethods.CreateProduct(Product);
MessageBox.Show("Produkt oprettet!");
}
}