小编mao*_*vid的帖子

我正在尝试接收仅使用MongoDB C＃驱动程序填充的子字段的新数组。例如，我有以下文档：

{
    "_id" : "fca739d0-cddd-4762-b680-597d2996404b",
    "Status" : 1,
    "AccountId" : "1112",
    "Timestamp" : ISODate("2016-04-27T13:46:01.888Z"),
    "CartItems" : [ 
        {
            "ProductId" : "222",
            "Price" : 100,
            "ShippingPrice" : 20,
            "Quantity" : 3
        }, 
        {
            "ProductId" : "504",
            "Price" : 200,
            "ShippingPrice" : 20,
            "Quantity" : 2
        }, 
        {
            "ProductId" : "504",
            "Price" : 200,
            "ShippingPrice" : 20,
            "Quantity" : 1
        }, 
        {
            "ProductId" : "504",
            "Price" : 200,
            "ShippingPrice" : 20,
            "Quantity" : 1
        }
    ]
}

我正在尝试CartItems仅接收具有的新数组的文档，ProductId …