List Generic - get some files

Dan

I created a generic string list, in which I want to add files from two different locations: from C:\folder1 and from C:\folder2. The files that I want to add, have .pdf extension and as comparation, must be accessed today. This is my code:

List PDFiles = Directory.GetFiles("C:\folder1\", "*.pdf", SearchOption.AllDirectories).Where(x => File.GetLastAccessTime(x).Date.ToShortDateString() == DateTime.Today.Date.ToShortDateString())

.Select(x => x)

.ToList();

Now how can I add the next files, from C:\folder2 path? (with the same extension and comparation )?

I tried something like this, but I don't know if is such a good idea:

foreach (var test in Directory.GetFiles("C:\folder2\, "*.pdf", SearchOption.AllDirectories).Where(x => File.GetLastAccessTime(x).Date.ToShortDateString() == DateTime.Today.Date.ToShortDateString()))

{

PDFiles.Add(test);

}

7 Replies

Know the answer? Post it — somebody with the same question will find it here.

Vulpes13y ago
Accepted answer
Try this which uses the Union extension method to amalgamate the files in the two folders:

List PDFiles = Directory.GetFiles(@"C:\folder1\", "*.pdf", SearchOption.AllDirectories)
.Union(Directory.GetFiles(@"C:\folder1\", "*.pdf", SearchOption.AllDirectories))
.Where(x => File.GetLastAccessTime(x).Date.ToShortDateString() == DateTime.Today.Date.ToShortDateString())
.Select(x => x)
.ToList();

As it's certain that there won't be any duplicate file paths, you could also use Concat instead of Union - in fact, the former might be faster on folders which contain a lot of files.
0
Vulpes13y ago
OK, fair enough :)
0
Dan13y ago
I think I will let it to duplicate files anyway, cause every file is checked with the files from the FTP Server, and this will not be a such a big problem. Thanks!
0
Vulpes13y ago
Am I right in thinking that you'll still need the full path (not just the file name) and, if there are duplicate files, the one in either folder will do?
0
Dan13y ago
Yes, that's what I want, cause I want to send them on a FTP Server
0
Vulpes13y ago
Well, the filepaths are different because, even if it's the same file, it's in a different folder.

Are you saying that you want to amalgamate the files in the two folders but eliminate any duplicate files?
0
Dan13y ago
Both options ( Union & Concat ) works. But, both options duplicate file paths: http://img9.imageshack.us/img9/7994/s8e.png

EDIT: He duplicates the file because the folder path is not the same ( folder1 <> folder2 )
0