使用Mongo C#2.0驱动程序替换嵌入式文档 [英] Replace Embedded Document using Mongo C# 2.0 driver

问题描述

我有一个包含嵌入式单元阵列的文档，如下所示:

I have a document that have a embedded array of units, like this:

{
    "_id" : ObjectId("5807c22e959ca231f0c48a75"),
    "Code" : "Value",
    "Units" : [ 
        {
            "_id" : ObjectId("5807cc08959ca331f09c530e"),
            "Code" : "Foo",
            "Label" : "Foo"
        },
        {
            "_id" : ObjectId("5807cc08959ca331f09c530e"),
            "Code" : "Bar",
            "Label" : "Bar"
        },
    ]
}

我想通过其ID查找一个单位，并将其替换为新文档. 我该如何使用Mongo C#驱动程序2.0做到这一点?

I want to find a unit by its id and replace it with a new document. How could I do that using the Mongo C# Driver 2.0?

提前谢谢！

推荐答案

谢谢大家.根据您的回答，我提出了以下解决方案:

Thanks guys. From your answers, I came up with the following solution:

var mainDocumentId = "5807c22e959ca231f0c48a75";
var arrayItemId = "5807cc08959ca331f09c530e"; //Id for foo

var unit = new Unit(...)
var filter = Builders<UnitType>.Eq(o => o.Id, mainDocumentId); // optional
filter &= Builders<UnitType>.Filter.ElemMatch(o => o.Units, o => o.Id == arrayItemId);
var update = Builders<UnitType>.Update.Set(o => o.Units[-1], unit);

collection.UpdateOne(filter, update);

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