有没有办法从_id字段中从MongoDB检索数据? [英] Is there a way to retrieve data from MongoDB without the _id field?

问题描述

我正在项目中使用MongoDB，目前正在学习如何工作.

I am using MongoDB in our project and I'm currently learning how things work.

插入记录时，MongoDB自动生成ID.查询数据时，它始终返回_id.当我们对Bson/Json进行反序列化以取出对象时，这会产生一个问题，因为我们的类型没有该字段(并且我们真的不想放入它).

When inserting records, MongoDB auto generates the ID. When querying data, it always returns _id. This creates a problem when we deserialise the Bson/Json to out objects as our types don't have that field (and we don't really want to put it in).

有人知道如何在不获取_id的情况下检索数据吗?

Does anyone know how to retrieve data without getting _id in the result?

推荐答案

是的，只需将其显式省略即可:

Yes, just explicitly omit it:

collection.Find(criteria)
    .SetFields(Fields.Include("oneField", "anotherField").Exclude("_id"))

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