Get Parent Folder in C#

How to get the parent directory of a sub directory using C# and .NET.
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We can use the System.IO.DirectoryInfo class to get a parent of a specified folder or directory.
 
 You must import the System.IO before you can use this class.
 
 using System.IO;
 
 The Parent property of DirectoryInfo returns the parent directory as a DirectoryInfo. We can use the FullName property to get the full name of the directory.
 
 The following code snippet does the same.

string root = @"C:\Temp\Mahesh";

DirectoryInfo di = new DirectoryInfo(root);

Console.WriteLine(di.Parent.FullName);

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