Directory.GetFiles的一些扩展名 [英] Directory.GetFiles of certain extension
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问题描述
Directory.GetFiles 有没有办法简化这个linq表达式? (dir,*。*,SearchOption.AllDirectories)
.Where(s => s.EndsWith(。jpg,StringComparison.OrdinalIgnoreCase)||
s.EndsWith(。gif ,StringComparison.OrdinalIgnoreCase)||
s.EndsWith(。png,StringComparison.OrdinalIgnoreCase)||
...);
基本上我想返回一个特定扩展名的所有文件。不幸的是,这种方法不是很灵活。我希望能够添加一个列表的扩展名,并让Directory.GetFiles返回这些扩展名。这是可能的吗?
解决方案
如果你想在LINQ中进行过滤,可以这样做:
var ext = new List< string> {jpg,gif,png};
var myFiles = Directory.GetFiles(dir,*。*,SearchOption.AllDirectories)
.Where(s => ext.Contains(Path.GetExtension(s)))
现在 ext
包含允许的扩展列表;您可以根据需要添加或删除项目以进行灵活过滤。
Is there a way to simplify this linq expression, or is there a better way of doing this?
Directory.GetFiles(dir, "*.*", SearchOption.AllDirectories)
.Where(s => s.EndsWith(".jpg", StringComparison.OrdinalIgnoreCase) ||
s.EndsWith(".gif", StringComparison.OrdinalIgnoreCase) ||
s.EndsWith(".png", StringComparison.OrdinalIgnoreCase) ||
...);
Basically I want to return all files of a certain extension. Unfortunately, this method isn't very flexible. I'd rather be able to add extensions to a list and have Directory.GetFiles return those extensions. Is that possible?
解决方案
If you would like to do your filtering in LINQ, you can do it like this:
var ext = new List<string> {"jpg", "gif", "png"};
var myFiles = Directory.GetFiles(dir, "*.*", SearchOption.AllDirectories)
.Where(s => ext.Contains(Path.GetExtension(s)));
Now ext
contains a list of allowed extensions; you can add or remove items as necessary for flexible filtering.
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