C# How do I use Directory.GetFiles() to get files

问题:

Is is possible to get files that is ordered same as in Windows Explorer

I know "natural sort", but it's not what I need, I need to get the file list ordered by the same attribute in Windows Explorer, for example:

If I ordered a directory by the attribute "create date", then I will get a file list as below:

name                    create date    file size
1.txt                   2012/1/1        125Kb
2.tab                   2012/3/2        15Kb
3.bmp                   2013/5/5        26Kb

If my windows explorer order file list with the attribute "file size", the the file list would be:

name                     create date    file size
2.tab                    2012/3/2        15Kb
3.bmp                    2013/5/5        26Kb
1.txt                    2012/1/1        125Kb

Could anyone help?

回答1:

using System.Linq;

DirectoryInfo info = new DirectoryInfo(""); FileInfo[] files = info.GetFiles().OrderBy(p => p.CreationTime).ToArray(); foreach (FileInfo file in files) { // DO Something... }

here is the sample code for get files in directory by creation time.

You can get files by size same way.

回答2:

Here's how to get a list of files sorted by their name:

var path = @"C:\windows"; // obviously change this to whatever you want
var files = System.IO.Directory.GetFiles (path).ToList ();
file.Sort();

And that's it!

Here's how you would do it per your given code sample:

var temperaturePressureSignalFilesList = Directory.GetFiles(TemperaturePressureSignalDirectory, "*.txt", SearchOption.TopDirectoryOnly).ToList();
temperaturePressureSignalFilesList.Sort();

回答3:

I think this is going to be a lot more complex than you expect. Folder settings are stored in the registry in two places:

HKCU\Software\Microsoft\Windows\Shell\BagMRU
HKCU\Software\Microsoft\Windows\Shell\Bags

The first path contains a structure which reflects the structure of the file system, and the second path contains details about those items, including a REG_BINARY value called "Sort" which records the sort order used for that folder.

See Willi Balenthin's website for details on the structure, including sample code (in Python)

回答4:

If you want natural sort order, you should either P/Invoke StrCmpLogicalW (http://msdn.microsoft.com/en-us/library/bb759947.aspx) or find a managed natural sort algorithm. There is no built-in natural sort in .NET Framework.

回答5:

I think you cannot know which is the order in the pane (by size, name or whatever), you must read the list and then sort it the way you want or prompt the user to select a sorting attribute.

As Kenny posted Sorting Directory.GetFiles() here is an approach, anyway I still thinking there is no possibly way to know which is the sorting order that user selected in the viewing pane.

回答6:

I guess you are talking about viewing pane in Windows Explorer (it's essentially a Windows File Manager but also known under different name). Some clarification is needed. You can apply your custom sorting on various columns; moreover, you can have multiple viewing panes (windows) open sorted on different columns. Thus, the problem definition is a bit unclear.

Assuming that you know the sorting order in your viewing panes, then you can use System.IO.DirectoryInfo and derived FileSystemInfo[] objects; the latter has files.OrderBy method. Hope this will help. My best, Alex

回答7:

I think you would have to write a shell extension for windows explorer that captures sort events on columns and writes that metadata to disk in some structured way. You may have multiple explorer windows open so might be an idea to apply timestamp or id so you know which explorer window you are dealing with. Then in your app read that metadata to get the sort order and apply accordingly. Not easy but doable.