//Remove product image window on mouse exit.
private void CloseImageWindowOnMouseLeave(object sender, MouseEventArgs e)
{
inventoryItemImageWindow.Close();
inventoryItemImageWindow = null;
}
//Display a product image window on click.
private void ShowImage(object sender, RoutedEventArgs e)
{
inventoryItemImageWindow = new InventoryItemImageWindow(this);
inventoryItemImageWindow.WindowStartupLocation = WindowStartupLocation.CenterScreen;
inventoryItemImageWindow.ShowDialog();
}