Shaohen’s C# Documentation

This is a simple program to explore the static Directory class

using System;
using System.IO;
using System.Diagnostics;
using System.Threading;

/// 

/// This program displays the folders of E:\DeleteMe
/// 

class DisplayDirectory
   {
   static string folder = @"E:\DeleteMe";
   static string createFolder = @"E:\DeleteMe2";

   public static void Main()
       {
       Console.WriteLine("folder = " + folder + "\n");
 
  try {
   // Does directory exists?
   Console.WriteLine("Directory.Exists({0}) = {1}", folder, Directory.Exists(folder) );
  
   // Create directory
   Console.WriteLine("\nCreating folder " + createFolder);
   if( ! Directory.Exists(createFolder) )    // If directory doesn't exists
    Directory.CreateDirectory(createFolder);
   
    Debug.Assert(Directory.Exists(createFolder),  // Folder should exists
     "Folder " + createFolder + " should exist");
    
   // DIsplay the time the folder was created
   DateTime folderTime = Directory.GetCreationTime(createFolder);
   Console.WriteLine("Time {0} was created is {1}", createFolder, folderTime.ToString() );
   

   // Display the current folder
   Console.WriteLine("\nThe current directory is " + Directory.GetCurrentDirectory() );
  
   // Display the directories in E:   Console.WriteLine("\n" + @"E:\ contains ... ");
   foreach(string directory in Directory.GetDirectories(@"E:\") )
    {
    Console.Write(directory + "\t");
    }
   Console.WriteLine("\n");
  
    // Display directories in E:\ that starts with "C"
    Console.WriteLine(@"E:\ subdirectories that starts with C... ");
    foreach(string directory in Directory.GetDirectories(@"E:\", "C*.*") )
    {
     Console.Write(directory + "\t");
    }
    Console.WriteLine();
   
   // Get the directory root
   Console.WriteLine("\nDirectory.GetDirectoryRoot(createFolder) = " +
    Directory.GetDirectoryRoot(createFolder) );
   
    Console.WriteLine(@"Directory.GetDirectoryRoot(""."") = " +
     Directory.GetDirectoryRoot(".") );
  
   // Get the files in the current folder
   Console.WriteLine("\nFiles in the current folder \".\" ({0}) are: ", Directory.GetCurrentDirectory() );
   foreach(string files in Directory.GetFiles(".") )
    {
    Console.Write("{0}\t", files);
    }
   Console.WriteLine();
  
   // Get ALL the files and subdirectories of E:\C#\Database
   Console.WriteLine("\nAll Files and directories in " + @"E:\C#\Database" + " are:" );
   foreach(string files in Directory.GetFileSystemEntries(@"E:\C#\Database") )
    {
    Console.Write("{0}\t", files);
    }
   Console.WriteLine();
  
   // Sleep for awhile
   //Thread.Sleep(TimeSpan.FromSeconds(3) );
  
   // Get and set the ACCESS time of the folder E:\DeleteMe2
    // Access teh folder (so that access time is NOW)
    Directory.GetFileSystemEntries(createFolder);
    // Get the time
    Console.WriteLine("\nAccess time for {0} is {1}",
     createFolder, Directory.GetLastAccessTime(createFolder) );
    
    // Set the  access time
    Directory.SetLastAccessTime(createFolder, new DateTime(2012, 12, 12, 12, 12, 12) );
    // Get the time
    Console.WriteLine("\n\tAccess time for {0} AFTER SETTING is {1}",
     createFolder, Directory.GetLastAccessTime(createFolder) );
  
   // Get and set  WRITE tiem of the folder E:\DeleteME
    Console.WriteLine("\nWritten time for {0} REAL {1}",
     createFolder, Directory.GetLastWriteTime(createFolder) );
   
    // Set the write time
    Directory.SetLastWriteTime(createFolder, new DateTime(2012, 12, 12, 12, 12, 12) );
   
    Console.WriteLine("\n\tWritten time for {0} AFTER SETTING {1}",
     createFolder, Directory.GetLastWriteTime(createFolder) );
   
   // Get the dirves in this computer
   Console.WriteLine("\nDrives in this computer: ");
   foreach(string drives in Directory.GetLogicalDrives() )
    {
    Console.Write("{0}\t", drives);
    }
   Console.WriteLine();
  
   // Get the parent folder in DirectoryInfo
   DirectoryInfo parent = Directory.GetParent(".");
   Console.WriteLine("\nParent = " + parent);
  
   // Directory.Move()
    // Make some directories in E:\DeleteMe\Shaohen
    Directory.CreateDirectory(@"E:\DeleteMe\Shaohen");
   
    Debug.Assert(Directory.Exists(@"E:\DeleteMe\Shaohen"));
   
    // Move the folder to E:    // Note: The destination folder shouldn't exists, meaning
    //   If want to move E:\DeleteMe\Shaohen to E:\DeleteMe2 so that
    //   E:\DeleteMe2 has E:\DeleteMe2\Shaohen    //   Then the argument to Directory.Move() should be
    //    Directory.Move(@"E:\DeleteMe\Shaohen", @"E:\DeleteMe2\Shaohen");
    //   and not
    //    Directory.Move(@"E:\DeleteMe\Shaohen", @"E:\DeleteMe2");
    Directory.Move(@"E:\DeleteMe\Shaohen", @"E:\DeleteMe2\Shaohen");
   
   // Set current Directory to E:\DeleteMe
   Directory.SetCurrentDirectory(folder);
    // Get current Directory
    Console.WriteLine("\nCurrent directory is " + Directory.GetCurrentDirectory() );
   
   
   }
  
  catch(Exception e)
   {
   Console.WriteLine("Error: " + e);
   }
  finally
   {
   // Delete the folder
   Console.WriteLine("\nDeleting folder " + createFolder);
   Directory.Delete(createFolder, true);    // Delete the folder and
                //  all the subdirectories
   Debug.Assert( !Directory.Exists(createFolder) );// Folder shouldn't exists
   }
  
  }


 }