private void searchButton_Click(object sender, EventArgs e) { try { String searchText = searchImeiTextBox.Text; if (String.IsNullOrEmpty(searchText)) { MessageBox.Show("Insert imei number for Searching"); return; } if (searchImeiTextBox.Text.Length < 15) { MessageBox.Show("IMEI requires exact 15 characters!"); return; } _mobile = _mobileManager.SearchMobileByImei(searchText); if (!String.IsNullOrEmpty(_mobile.IMEI)) { MessageBox.Show("Mobile handset found!"); modelNameLabel.Text = _mobile.ModelName; imeiLabel.Text = _mobile.IMEI; priceLabel.Text = _mobile.Price; } else { MessageBox.Show("Mobile not found!!"); } } catch (Exception exception) { MessageBox.Show(exception.Message); _mobileManager.CloseConnection(); } }