private void AddBtn_Click(object sender, RoutedEventArgs e)
{
string ItemName = ItemBox.Text;
string DateOfSale = DateBox.Text;
string Country = CountryBox.Text;
string Currency = CurrencyBox.Text;
if (!float.TryParse(PriceBox.Text, out float NetPrice) & float.TryParse(VATbox.Text, out float VAT))
{
MessageBox.Show("Net Price and VAT fields can only contain numbers!");
}
con.InsertSales(ItemName, Country, Currency, DateOfSale, NetPrice, VAT);
MessageBox.Show("Sale has been added.");
ItemBox.Clear();
DateBox.Clear();
CountryBox.Clear();
CurrencyBox.Clear();
PriceBox.Clear();
VATbox.Clear();
}
