private void OnGetProductButtonClick(object sender, RoutedEventArgs e)
{
string productIdStr = ProductId.Text;
if (productIdStr != "")
{
int productId = int.Parse(productIdStr);
var product = Persister.GetProductById(productId);
if (product == null)
{
MessageBox.Show(String.Format("No product with Id {0} was found in the inventory`s database!", productId));
}
this.DataContext = product;
}
else
{
MessageBox.Show("No product id was entered!");
}
}