You can extract the filename from full path.
.NET 3, filenames only
var filenames3 = Directory
.GetFiles(dirPath, "*", SearchOption.AllDirectories)
.Select(f => Path.GetFileName(f));
.NET 4, filenames only
var filenames4 = Directory
.EnumerateFiles(dirPath, "*", SearchOption.AllDirectories)
.Select(Path.GetFileName); // <-- note you can shorten the lambda
Return filenames with relative path inside the directory
// - file1.txt
// - file2.txt
// - subfolder1/file3.txt
// - subfolder2/file4.txt
var skipDirectory = dirPath.Length;
// because we don't want it to be prefixed by a slash
// if dirPath like "C:MyFolder", rather than "C:MyFolder"
if(!dirPath.EndsWith("" + Path.DirectorySeparatorChar)) skipDirectory++;
var filenames4s = Directory
.EnumerateFiles(dirPath, "*", SearchOption.AllDirectories)
.Select(f => f.Substring(skipDirectory));
confirm in LinqPad...
filenames3.SequenceEqual(filenames4).Dump(".NET 3 and 4 methods are the same?");
filenames3.Dump(".NET 3 Variant");
filenames4.Dump(".NET 4 Variant");
filenames4s.Dump(".NET 4, subfolders Variant");
Note that the *Files(dir, pattern, behavior)
methods can be simplified to non-recursive *Files(dir)
variants if subfolders aren't important
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