how to read a return value (string) of a SP

Hi! I've a code that execute a SP


public static string aaaa(...)
        {
            string result;
            using (SqlConnection myConnection = new SqlConnection(AppConfiguration.ConnectionString))
            {
                using (SqlCommand myCommand = new SqlCommand("mySP", myConnection))
                {
                    myCommand.CommandType = CommandType.StoredProcedure;
              &n ...