private void but_add_Click(object sender, EventArgs e)
{
NewProduct newProduct = new NewProduct(ref a);
if (DialogResult.OK == newProduct.ShowDialog())
{
listView_product.Items.Clear();
FillDB();
}
}
/// <summary>
/// Function for adding new client.
/// </summary>
/// <param name="sender">object sender.</param>
/// <param name="e">e event.</param>
private void buttonAddNewCustomer_Click(object sender, EventArgs e)
{
NewProduct newProduct = new NewProduct();
newProduct.ShowDialog();
}