使用LINQ的不同类型的两个列表的区别 [英] Difference of two List with different types using LINQ

问题描述

我正在尝试通过LINQ查询获得两个列表的不同之处.但是列表的类型不同.

I am trying the get the different of two lists with a LINQ query. But the lists are not of the same type.

List<Vehicle> unsoldVehicles
List<string> ListDetailUrls

每个车辆对象都有一个名为 UrlID (字符串)的字段，而 ListDetailUrls 列表仅包含字符串. 我需要车辆列表中的所有车辆，其中字段 UrlID 与条目 ListDetailUrls 不匹配.

Each Vehicle Object has a field called UrlID (string) while the ListDetailUrls list consists only of strings. I need every Vehicle from the Vehicle List where the field UrlID does not match an entry ListDetailUrls.

到目前为止，我所做的是:

What I have done so far is :

List<Vehicle> missingVehicles = new List<Vehicle>(
    from uV in unsoldVehicles
    from de in ListDetailUrls
    where uV.UrlID != de
    select uV);

但是通过这样的查询，我的 missingVehicles 比 unsoldVehicles 还要多！

But with a query like this my missingVehicles are more items than the unsoldVehicles!

我一直在寻找一种以某种方式使用Except方法的方法，但是我只找到两个列表属于同一类型的示例.

I was looking for a way to use the Except-method somehow but I only find samples where both lists are of the same type.

推荐答案

您可以尝试这样的操作.

You could try something like this.

var missingvehicles = from uV in unsoldVehicles
                    where !listDetailUrls.Contains(uV.UrlID )
                    select uV;

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