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mplement as LastnameDir (30 points). Displays the names ofthe non-hidden files and directories in the current directory, or another directory, along with creation time, and size of file. In case of subdirectories, it displays the word cDIR> instead of file size. At the end, the command should display the total number of files in the directory, the total file size, and the number of sub-directories. COMP 3063, operating Systems, Spring 2017, Assignment 1, Due Feb 21.2017. (c) ALodgher Page 1 of 2 LodgherDir (displays info of all files and directories in current directory) LodgherDir c ILFromDir (displays info of all files and directories in clLFrombir)
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Answer #1

//Program

using System;
using System.IO;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication3
{
public class StackBasedIteration
{
static void Main(string[] args)
{
//Provide your directory name and path here. My directory was "C:/x/"
TraverseTree("C:/LastnameDir/");// You can provide "LastnameDir"

Console.WriteLine("Press any key");
Console.ReadKey();
}

public static void TraverseTree(string root)
{
// Data structure to hold names of subfolders to be
// examined for files.
Stack<string> dirs = new Stack<string>(20);
int count=0;
int dirno = 0;
long sum = 0;

if (!System.IO.Directory.Exists(root))
{
throw new ArgumentException();
}
dirs.Push(root);
while (dirs.Count > 0)
{
string currentDir = dirs.Pop();
string[] subDirs;
try
{
subDirs = System.IO.Directory.GetDirectories(currentDir);
}
catch (UnauthorizedAccessException e)
{
Console.WriteLine(e.Message);
continue;
}
catch (System.IO.DirectoryNotFoundException e)
{
Console.WriteLine(e.Message);
continue;
}

string[] files = null;
try
{
files = System.IO.Directory.GetFiles(currentDir);
}

catch (UnauthorizedAccessException e)
{

Console.WriteLine(e.Message);
continue;
}

catch (System.IO.DirectoryNotFoundException e)
{
Console.WriteLine(e.Message);
continue;
}
// Perform the required action on each file here.
// Modify this block to perform your required task.
Console.WriteLine("_______________________________________________________________________________\n");
Console.WriteLine("<DIR> : {0}\n", currentDir);
Console.WriteLine("\nFile Creation Time\t:\tFile Length\t:\tFile Name\n");
Console.WriteLine("_______________________________________________________________________________\n\n");
foreach (string file in files)
{
try
{
// Perform whatever action is required in your scenario.
System.IO.FileInfo fi = new System.IO.FileInfo(file);
Console.WriteLine("{2}\t:\t{1}\t\t:\t{0}", fi.Name, fi.Length, fi.CreationTime);
sum = sum + fi.Length;
count++;
}
catch (System.IO.FileNotFoundException e)
{
// If file was deleted by a separate application
// or thread since the call to TraverseTree()
// then just continue.
Console.WriteLine(e.Message);
continue;
}
}
// Push the subdirectories onto the stack for traversal.
// This could also be done before handing the files.
foreach (string str in subDirs)
{
dirs.Push(str);
dirno++;
}
  
}
Console.WriteLine("\n...............................................................................\n");
Console.WriteLine("Total number of files : {0}\nTotal file size : {1}\nTotal number of Sub-Directories : {2}\n", count, sum, dirno);
Console.WriteLine("_______________________________________________________________________________\n\n");
  
}
}
}

OUTPUT:

ile CreationTime File Length Pile Hame 2-01-2017 12:00:20 1-01-2017 20:19:19 2-01-2017 11:47:00 2-01-2017 11:45:47 0-10-2016

1-01-2017 14:14:04 2-02-2017 12:36:05 2-02-2017 12:35:50 6-02-2017 21:35:44 6-02-2017 21:03:53 6-02-2017 21:03:43 7-10-2016 1

1-02-2017 08:4256 1-02-2017 08:42:56 4535 5212 Calculator-java CalculatorWitMethods.jav 1-02-2017 08:4256 1-02-2017 08:4256 1

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