public void updateControls() {
		ArrayList<String> list = new ArrayList<>();

		try {
			Connection minConnection;
			minConnection = DriverManager
					.getConnection("jdbc:sqlserver://LAPTOP-32KIS2JP\\DANIELSSQL;databaseName=YodaFitness2;user=sa;password=dani6602;");

			Statement stmt = minConnection.createStatement();

			ResultSet res = stmt.executeQuery("select medlemID, navn, adresse, tlfNr, oprettelsesDato from Medlem");
			while (res.next()) {

				list.add("Id: " + res.getString(1) + " " + "Navn: " + res.getString(2) + " " +
						"adresse: " + res.getString(3) + " " + "tlfNr: " + res.getString(4) + " " +
						"oprettelsesDato: " + res.getString(5));
			}

			if (res != null)
				res.close();
			if (stmt != null)
				stmt.close();
			if (minConnection != null)
				minConnection.close();
		} catch (Exception e) {
			System.out.println("fejl:  " + e.getMessage());
		}
		lvwInstruktorliste.getItems().setAll(list);
	}