c# - 从 IGrouping 中检索所有值

Question

我目前有:

UIEnumerable <IGrouping<PortableKey, FileInfo>> 

从此代码:

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; }
    }

基本上过滤并抓取所有重复的文件。我如何获取它以便以这种方式获得所有 FileInfo？

List<FileInfo> list

Answer 1

您需要使用额外的 from 子句:

from f in g
select f

这会转换为 .GroupBy(...).SelectMany(g => g)