private void SuppDelete_Click(object sender, RoutedEventArgs e)
        {
            if (SupplierID.Text == "")
            {
                MessageBox.Show("Supplier ID field is Empty");
            }
            else
            {
                dataAccess data = new dataAccess();
                suppliers  supp = new suppliers();
                supp.SupplierID  = int.Parse(SupplierID.Text);
                supp.CompanyName = CompanyName.Text;

                data.deleteSuppliers(supp);
                MessageBox.Show("Supplier " + supp.CompanyName + " Removed Successfully");
            }
        }