如何在Entity Framework中使用合适的json响应实现多个表的左连接

var result = from table1 in dbContext.Table1
             join table2 in dbContext.Table2 on table1.Id equals table2.Table1Id into joinedTable
             from subTable2 in joinedTable.DefaultIfEmpty()
             select new
             {
                 Table1Id = table1.Id,
                 Table1Name = table1.Name,
                 Table2Id = subTable2 != null ? subTable2.Id : null,
                 Table2Name = subTable2 != null ? subTable2.Name : null
             };

var jsonResult = JsonConvert.SerializeObject(result);
return jsonResult;