private void cmdAdd_Click(object sender, EventArgs e) { AddCustomer fAddCustomer = new AddCustomer(); //Initialized AddCustomer form if (fAddCustomer.ShowDialog() == DialogResult.OK) // show AddCustomer form and if success { //get newly add Customer form Customer form and add to list customers.Add(fAddCustomer.GetNewCustomer()); CustomerToListViewItem(lstCustomers, fAddCustomer.GetNewCustomer()); } }