小编Eml*_*nie的帖子

我有两个List<FileInfo>,我想返回FileItem它们之间的共同点.

List<FileInfo> outputList = new List<FileInfo>();
outputList = list1.Intersect(list2).ToList();

但是,我要回到一个空列表.

这两个列表都包含FileInfo了

System.IO.DirectoryInfo dir = new System.IO.DirectoryInfo(startFolder);
IEnumerable<System.IO.FileInfo> fileList = 
dir.GetFiles("*.*", System.IO.SearchOption.AllDirectories);

并通过查询过滤.

我目前有:

UIEnumerable <IGrouping<PortableKey, FileInfo>> 

从这段代码:

var queryDupFiles = from file in fileList
    group file by new PortableKey { Name = file.Name, Length = file.Length } 
    into g
    where g.Count() > 1
    select g;

PortableKey的代码是:

    public class PortableKey
    {
        public string Name { get; set; }
        public long Length { get; set; }
    }

基本上过滤和抓取所有重复的文件.我如何获得它以便以这种方式拥有所有FileInfo？

List<FileInfo> list