Lists files in the current working directory

 
/*
C# Programming Tips & Techniques
by Charles Wright, Kris Jamsa
 
 
Publisher: Osborne/McGraw-Hill (December 28, 2001)
ISBN: 0072193794
*/
 
 
//  ShowDir.cs -- Changes the current working directory and then lists
//the files in the directory.
//
//Compile this program with the following command line:
//    C:>csc ShowDir.cs
using System;
using System.IO;
 
 
namespace nsStreams
{
    public class ShowDir
    {
        static public void Main (string [] args)
        {
            if (args.Length > 0)
            {
// Build the directory name from the arguments (a directory name may
// contain spaces).
string DirName = "";
foreach (string str in args)
{
    DirName += str;
    DirName += " ";
}
// Strip any leading or trailing spaces from the directory name
DirName = DirName.Trim ();
// Check whether the directory exists
//if (!Directory.Exists(DirName))
//{
//    Console.WriteLine ("No such directory: " + DirName);
//    return;
//}
// Set the current working directory
try
{
    Directory.SetCurrentDirectory (DirName);
}
catch (UnauthorizedAccessException)
{
    Console.WriteLine ("Not authorized to access " + DirName);
    return;
}
catch (FileNotFoundException)
{
    Console.WriteLine ("No such directory: " + DirName);
    return;
}
            }
// List the files in the selected directory
            string [] files = Directory.GetFiles (".");
            foreach (string str in files)
            {
int index = str.LastIndexOf ("\\");
Console.WriteLine (str.Substring (index + 1));
            }
        }
    }
}