How do I find the parent directory of a path?

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

upDir = Directory.GetParent(path).FullName;

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

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