How do I find the parent directory of a path?

Question

How do I get a parent of a directory, for example:

string upDir = GetOneLvlUp(@\"C:\\AAA\\BBB\\CCC\\DDD\\\");

Output:  C:\\AAA\\BBB\\CCC\\

Answer 1

string path = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
string parentDir = Directory.GetParent(path).FullName;

Answer 2

var upDir = new DirectoryInfo(yourPath).Parent.FullName;

Answer 3

upDir = Directory.GetParent(path).FullName;

Answer 4

Everything you want is in the Directory class:

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

In particular, GetParent:

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