linq - Linq - 过滤多个可能的等于值

Question

我有这个：

vehicles = vehicles.Where(x => x.ModelUrl == filter.ModelUrl);

这工作正常，但我需要传递一个列表，而不是传递单个字符串（作为 filter.ModelUrl），并且查询应该返回其中 x.ModelUrl 是列表中的任何项目的所有结果。

我怎样才能做到这一点？

谢谢

Answer 1

vehicles = vehicles.Where(x => OtherList.Contains(x.ModelUrl));

或者

vehicles = vehicles.Where(x => OtherList.Any(ol => ol.ModelUrl == x.ModelUrl));

Answer 2

vehicles = vehicles.Where(x => list.Contains(x.ModelUrl));

Answer 3

欢迎

vehicles = vehicles.Where(x => list.Contains(x.ModelUrl));

Answer 4

Where/方法的替代Contains方法是使用Join：

vehicles = vehicles.Join(yourListOfUrls, 
                         vec => vec.ModelUrl,
                         url => url,
                         (vev, url) => vec);

或者

vehicles = from vec in vehicles
           join url in yourListOfUrls on vec.ModelUrl Equals url
           select vec

对于更大的列表，这更快。

Answer 5

vehicles = vehicles.Where(x => list.Contains(x.ModelUrl));

Answer 6

也许你应该只使用方法Contains：

var vehicles = vehicles.Where(x => filter.Contains(x.ModelUrl));