C# - Getting the folder name from a path

Question

Hi

Here is some code

string path = "C:/folder1/folder2/file.txt";

What objects or methods could I use that would give me a result of folder2?

Thank you in advance.

Answer 1

System.IO.Path.GetDirectoryName(path);

Answer 2

This should work:

FileInfo fileInfo = new FileInfo(path);
string folder = fileInfo.Directory.Name;

http://msdn.microsoft.com/en-us/library/system.io.fileinfo.aspx
http://msdn.microsoft.com/en-us/library/system.io.fileinfo.directory.aspx

http://msdn.microsoft.com/en-us/library/system.io.directoryinfo.name.aspx

This Name property returns only the name of the directory, such as "Bin"

Answer 3

I would probably use something like:

string path = "C:/folder1/folder2/file.txt";
string lastFolderName = Path.GetFileName( Path.GetDirectoryName( path ) );

The inner call to GetDirectoryName will return the full path, while the outer call to GetFileName() will return the last path component - which will be the folder name.

This approach works whether or not the path actually exists. This approach, does however, rely on the path initially ending in a filename. If it's unknown whether the path ends in a filename or folder name - then it requires that you check the actual path to see if a file/folder exists at the location first. In that case, Dan Dimitru's answer may be more appropriate.