private void dgvProduct_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            var d = dgvProduct.SelectedItem as BLL.Product;

            if (d != null)
            {
                data.Find(d.Id);
            }
        }
        private void onClientEvents()
        {
            BLL.FMCGHubClient.FMCGHub.On <BLL.Product>("Product_Save", (prod) => {
                this.Dispatcher.Invoke(() =>
                {
                    prod.Save(true);
                });
            });

            BLL.FMCGHubClient.FMCGHub.On("Product_Delete", (Action <int>)((pk) => {
                this.Dispatcher.Invoke((Action)(() => {
                    BLL.Product prod = new BLL.Product();
                    prod.Find((int)pk);
                    prod.Delete((bool)true);
                }));
            }));
        }