private void btnSale_Click(object sender, EventArgs e) { double newPrice = Convert.ToDouble(txtNewPrice.Text); double oldPrice = Convert.ToDouble(txtPrice.Text); double maxDiscount = oldPrice / 100 * 20; if (oldPrice - newPrice > maxDiscount) { MessageBox.Show("Discount cannot be more than 20%", "Price errror", MessageBoxButtons.OK, MessageBoxIcon.Error ); } else { using (MySqlConnection mysqlCon = new MySqlConnection(connectionString)) { mysqlCon.Open(); MySqlCommand mySqlCmd = new MySqlCommand("Sale", mysqlCon); mySqlCmd.CommandType = CommandType.StoredProcedure; mySqlCmd.Parameters.AddWithValue("_userID", Helper.curUser); mySqlCmd.Parameters.AddWithValue("_carID", this.carForSale.getCarID()); mySqlCmd.Parameters.AddWithValue("_clientID", dataGridView1.CurrentRow.Cells[0].Value); mySqlCmd.Parameters.AddWithValue("_newPrice", Convert.ToDouble(newPrice)); mySqlCmd.ExecuteNonQuery(); MessageBox.Show("Submitted Successfully"); this.Close(); carCRUD carcr1 = new carCRUD(); carcr1.Show(); } } }
private void carToolStripMenuItem_Click(object sender, EventArgs e) { carCRUD car = new carCRUD(); car.Show(); }