Get DirectoryInfo from FileInfo: name, parent directory name, directory exists : Directory « File Directory Stream « C# / CSharp Tutorial

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C# / CSharp Tutorial » File Directory Stream » Directory   15. 15. 15. Get DirectoryInfo from FileInfo: name, parent directory name, directory exists using System; using System.IO; class MainClass {     public static void Main(string[] args)     {         FileInfo file = new FileInfo("c:\\test.txt");         // Display directory information.         DirectoryInfo dir = file.Directory;         Console.WriteLine("Checking directory: " + dir.Name);         Console.WriteLine("In directory: " + dir.Parent.Name);         Console.Write("Directory exists: ");         Console.WriteLine(dir.Exists.ToString());     } } Checking directory: c:\ Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an ob ject. at MainClass.Main(String[] args) 15. 15. Directory 15. 15. 1.  Get the files from the root directory 15. 15. 2.  Use file filer on a directory 15. 15. 3.  Directory.Exists 15. 15. 4.  Get Current Directory 15. 15. 5.  Get relative path 15. 15. 6.  Changing current directory to c:\\ 15. 15. 7.  Delete Directory 15. 15. 8.  Directory Attributes 15. 15. 9.  Use DirectoryInfo to create sub directory 15. 15. 10.  List directory under a directory 15. 15. 11.  List files under a directory 15. 15. 12.  All Directories traverses all sub-directories under the root 15. 15. 13.  Traverse all files under the root 15. 15. 14.  Recursive Directory use 15. 15. 15.  Get DirectoryInfo from FileInfo: name, parent directory name, directory exists 15. 15. 16.  DirectoryInfo: creation time, last write time, last access time 15. 15. 17.  DirectoryInfo: Directory attribute list and Directory contains

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