private void Remove_cupiesBtr(object sender, RoutedEventArgs e) { if (Checks.isTextInt(AmountTxt.Text))// check the input { //here we check if the amount that we want to remove is more then the items in stock. // we cant remove cupies that not existent try { item.ReduceCopies(int.Parse(AmountTxt.Text)); AmountTxt.Text = ""; System.Windows.Forms.MessageBox.Show("Stock Reduce!", "Sucess"); } catch (Exception z) { System.Windows.Forms.MessageBox.Show(z.Message, "Error"); } } else { System.Windows.Forms.MessageBox.Show("Number Is not Valid!!", "Eroor"); AmountTxt.Text = ""; } }