Best way to test SQL Server connection programmatically

public partial class Form1 : Form


    {
        static string connectionString = "Data Source=LENOVO-PC;Initial Catalog=DicleY;Integrated Security=True";

        public Form1()
        {
            InitializeComponent();
        }
        private static bool ConnectionTest(string connectionString)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        try
        {
            connection.Open();
            return true;
        }
        catch (SqlException)
        {
            return false;
        }
    }
}


        private void button2_Click(object sender, EventArgs e)
        {
            if (ConnectionTest(connectionString))
            {
                MessageBox.Show("Connected");

            }
            else
                MessageBox.Show("Not connected");

        }