private void SaveB_Click(object sender, EventArgs e) { if (checkApparatus() != null) { Apparatus apparatus = checkApparatus(); string queryText = "INSERT INTO `apparatus`( `Name`, `Description`, `Weight`, `Volume`, `Pressure`, `WorkTime`, `Reserve`) VALUES ('" + apparatus.getName() + "','" + apparatus.getDescription() + "'," + apparatus.getWeight() + "," + apparatus.getVolume() + "," + apparatus.getPressure() + "," + apparatus.getWorkTime() + "," + apparatus.getReserve() + ");"; MySqlCommand commandDatabase = new MySqlCommand(queryText, databaseConnection); commandDatabase.CommandTimeout = 60; try { databaseConnection.Open(); commandDatabase.ExecuteNonQuery(); databaseConnection.Close(); NameBox.Text = ""; DescriptionBox.Text = ""; WeightBox.Text = ""; VolumeBox.Text = ""; TimeBox.Text = ""; ReserveBox.Text = ""; PressureBox.Text = ""; } catch (Exception ex) { NameBox.Text = ex.Message; } } }