C sharp - obtener ultimo registro de una tabla mysql y copiar en label.text

class consultaBDcs

{

	static public MySqlConnection conectar()

	{

		string cs = @"server=localhost;userid=root;

		password=nemesis;database=caja197";

		MySqlConnection conn = null;

		try

		{

			conn = new MySqlConnection(cs);

			conn.Open();

			return conn;

		}

		catch (MySqlException ex)

		{

			Console.WriteLine("Error: {0}", ex.ToString());

			return null;

		}

	}

	static public int ultimaVenta()

	{

		MySqlConnection conn = conectar();

		string query = "SELECT numerodeventas FROM contadordeventas ORDER BY numerodeventas DESC LIMIT 1";

		MySqlCommand cmd = new MySqlCommand(query, conn);

		int contador = Convert.ToInt32(cmd.ExecuteScalar());

		conn.Close();

		return contador;

	}

	private void Form1_Load(object sender, EventArgs e)

	{

		int contador = consultaBDcs.ultimaVenta();

		contador++;

		label13.Text = Convert.ToInt32(contador).ToString();

	}