public bool ValidareUser(string user, out string ErrorMessage) { //TO DO: Verficarea existaentei aceluiasi user in momentul inregistrarii var input = user; ErrorMessage = string.Empty; OleDbCommand cmdSelect; OleDbDataReader reader; ConectareBD conectare = new ConectareBD(); OleDbConnection conn = conectare.ConectareBazDate(); if (string.IsNullOrWhiteSpace(input)) { ErrorMessage = "Trebuie sa adaugi un nume de utilizator"; return(false); } else { conn.Open(); cmdSelect = new OleDbCommand("SELECT User, Parola FROM Conturi where Conturi.User = '******'", conn); reader = cmdSelect.ExecuteReader(); if (reader.HasRows) { ErrorMessage = "User-ul este deja folosit"; return(false); } } return(true); }