PUBLIC MARKS with tags c# & sql

try { // Chaîne de connexion string connectString = "database=test_paresco;server=am01;User ID=BACK;pwd=xxxxxx"; // Objet connection SqlConnection connection = new SqlConnection(connectString); // Ouverture connection.Open(); // Fermeture connection.Close(); } catch (Exception ex) { System.Diagnostics.Debug.WriteLine(ex.ToString()); }