public ReturnStatus SetConstant(SetConstant req)
        {
            using (var connection = new SqlConnection(_connectionString.JapaneseLearning))
            {
                var cmd = new SqlCommand(p_Constants_Set, connection)
                {
                    CommandType = CommandType.StoredProcedure
                };

                cmd.Parameters.AddWithValue("@UserID", _requestInfo.UserId);

                cmd.Parameters.Add("@RetVal", SqlDbType.Int).Direction          = ParameterDirection.Output;
                cmd.Parameters.Add("@RetMsg", SqlDbType.VarChar, 500).Direction = ParameterDirection.Output;

                cmd.Parameters.AddWithValue("@ConstantID", req.ConstantId);
                cmd.Parameters.AddWithValue("@ParentID", req.ParentId);
                cmd.Parameters.AddWithValue("@Name", req.Name);
                cmd.Parameters.AddWithValue("@Description", req.Description);
                cmd.Parameters.AddWithValue("@Disable", req.Disable);

                connection.Open();

                cmd.ExecuteNonQuery();

                return(new ReturnStatus(cmd.Parameters["@RetVal"].Value.ToSafeInt32(), cmd.Parameters["@RetMsg"].Value.ToSafeString()));
            }
        }
 public ReturnStatus SetConstant(SetConstant req)
 {
     return(null);
 }