private void buttonDelete_Click(object sender, EventArgs e) { DialogResult konfirmasi = MessageBox.Show("Prize has been deleted , are you sure?", "confirmation", MessageBoxButtons.YesNo); if (konfirmasi == System.Windows.Forms.DialogResult.Yes) { Tournaments tournaments = FormMenu.selectedTournament; Prize p = new Prize(int.Parse(textBoxPrizeId.Text), textBoxPrizePlaceName.Text, int.Parse(textBoxPriceAmount.Text), double.Parse(textBoxPrizePercentage.Text), tournaments); string add = Prize.DeletePrize(p); if (add == "1") { MessageBox.Show("Prize has been deleted.", "information"); FormPrize formPrize = (FormPrize)this.Owner; formPrize.FormPrize_Load(buttonDelete, e); this.Close(); } else { MessageBox.Show("Prize Failed to deleted. Message error: ", add); } } }