private void deleteButton_Click(object sender, EventArgs e) { OrderServices os1 = new OrderServices(); allOrders = os1.removeOrder(allOrders, Convert.ToInt32(IDbox.Value)); os1.Export(allOrders); }
private void deleteButton_Click(object sender, EventArgs e) { OrderServices os1 = new OrderServices(); int value = Convert.ToInt32(IDbox.Value); allOrders = os1.removeOrder(allOrders, value); os1.Export(allOrders); MessageBox.Show("The order with id: " + value.ToString() + " is deleted."); //在orderdetail中删除一行 MySqlConnection connection = new MySqlConnection(conString); connection.Open(); if (connection.State == System.Data.ConnectionState.Open) { using (connection) { MySqlCommand cmd = new MySqlCommand(); cmd.Connection = connection; cmd.CommandText = "DELETE FROM `order` WHERE ID=" + value.ToString(); cmd.ExecuteNonQuery(); } } connection.Close(); }