Banco de dados

try
            {
                SqlConnection thisConnection = new SqlConnection("Data Source=localhost\\SQLEXPRESS;" + "Initial Catalog=EasyQuest;" + "Integrated Security=SSPI");
                thisConnection.Open();

                try
                {
                    SqlCommand cmd = new SqlCommand("insert into RespQuest(IdNInquerito,idpergquest, idquest, respostaA)values ("+IdNInquerito+", "+idPergQuest+","+idQuest+",´"+aux+"´)" , thisConnection);
                    SqlDataReader rdr = cmd.ExecuteReader();
                    while (rdr.Read())
                    {
                        modelo = rdr.GetInt32(0);
                    }
                    rdr.Close();
                    thisConnection.Close();
                }
                catch (Exception a)
                {
                    Console.WriteLine("Error Occurred: " + a);
                }
            }
            catch (SqlException b)
            {
                Console.WriteLine(b.Message);
            }