total price in label from Datagridvie c# : Here is calculation of the Total price in C# and I want to show the total price of products in the label [Like in an image below][1] 

**The row with the SalesForm.TotalPrice calculate total price**

     if (cbxProdTypeSwitch.SelectedIndex == 0)
                    {
                        //phones 
                        Smartphone ph = (Smartphone)dgvProds.SelectedRows[0].DataBoundItem;
        
                        SalesForm.productName = ph.ProductName;
                        SalesForm.price = ph.price;
                        SalesForm.totalPrice = ph.price * Convert.ToInt32(nudAmount.Value);
                        SalesForm.salesDate = DateTime.Now;
                        SalesForm.amount = Convert.ToInt32(nudAmount.Value);
                        SalesForm.clientName = tbxClient.Text;
                        
                    }


  [1]: https://i.stack.imgur.com/ofJia.png