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Get the last modified filename in a sub directory

I have a directory with multiple sub directories under it. Each sub directory has one or more files in it. I want to get the filename of the file that has been last modified. How do I go about it ?

Thanks,
Aditya

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nishant joshi

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Mike Tomlinson

You could also sort the list. Something like:

string path = @"c:\some\path";
            List<string> files = new List<string>();
            files.AddRange(System.IO.Directory.GetFiles(path, "*", System.IO.SearchOption.AllDirectories));
            files.Sort(delegate(string file1, string file2)
            {
                return System.IO.File.GetLastWriteTime(file2).CompareTo(System.IO.File.GetLastWriteTime(file1));
            });
            System.IO.FileInfo fi = new System.IO.FileInfo(files[0]);
            MessageBox.Show(fi.LastWriteTime.ToString() + Environment.NewLine + fi.FullName);

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nishant joshi

is there any need of sort?????

Mike Tomlinson

Just depends on what you're doing...

What if later they want the five most recently modified files?

...or they want to sort on multiple parameters?

Sorting gives more flexibility.

nishant joshi

ok. great and what about performance for to get 1 file that was last modified?

Mike Tomlinson

Like I said, it depends on what you're doing. I was just presenting another valid approach. It's up to the author to decide what is best for his or her situation. =)