Possible Duplicate:
.NET How to check if path is a file and not a directory?
Can anyone think of a good way of telling whether a file system object path equates to a a file or a directory?
I did have the following method:
public static bool PathIsFile(this string fullPath)
{
return (Path.GetExtension(fullPath).Length > 0);
}
But some files have no extension and some directories have a dot in their name so this is not cutting it.
Have you checked out:
System.IO.Directory.Exists(path);
and
System.IO.File.Exists(path);
These return boolean, but I can't find out (at the moment) what errors they raise if given a file or directory respectively.
There's also the System.IO.FileInfo and System.IO.DirectoryInfo classes which should help you here.
There's no way of knowing just from a string analysis that something is a file or a directory, since, as you noted,
C:\WINDOWS\WhoKnowsWhatThisIs
might be either a directory or a file.
You'll have to call something like System.IO.Directory.Exists() or System.IO.File.GetAttributes() to test.
You have to ask the filesystem. It always knows. That is the only fool-proof way.
f1 = File(path);
bool isfile = f1.isFile();
bool isdir = f1.isDirectory();
Is an example from Java.IO.File.
