Creating a Directory Listing

The following code example shows how to use the I/O classes to create a listing of a directory.

Option Explicit On 
Option Strict On
Imports System
Imports System.IO
Class DirectoryLister
    Public Shared Sub Main()
        Dim dir As New DirectoryInfo(".")
        Dim f As FileInfo
        For Each f In dir.GetFiles("*.cs")
            Dim name As [String] = f.FullName
            Dim size As Long = f.Length
            Dim creationTime As DateTime = f.CreationTime
            Console.WriteLine("{0,-12:N0} {1,-20:g} {2}", size, creationTime, name)
        Next f
    End Sub
End Class

[C#]using System;
using System.IO;
class DirectoryLister
    public static void Main(String[] args)
        DirectoryInfo dir = new DirectoryInfo(".");
        foreach (FileInfo f in dir.GetFiles("*.cs")) 
            String name = f.FullName;
            long size = f.Length;
            DateTime creationTime = f.CreationTime;
            Console.WriteLine("{0,-12:N0} {1,-20:g} {2}", size, 
                creationTime, name);

In this example, the DirectoryInfo is the current directory, denoted by ("."), and the code lists all files in the current directory having a .cs extension, along with their file size, creation time, and name. Assuming that there were .cs files in the \Bin subdirectory of C:\MyDir, the output of this code might look like this:

953          7/20/2000 10:42 AM   C:\MyDir\Bin\paramatt.cs
664          7/27/2000 3:11 PM    C:\MyDir\Bin\tst.cs
403          8/8/2000 10:25 AM    C:\MyDir\Bin\dirlist.cs

If you want a list of files in another directory, such as your C:\ root directory, remember to use the backslash (\) escape character, as in "C:\\". You can also use Unix-style slashes, as in "C:/".

See Also

Reading and Writing to a Newly Created Data File | Opening and Appending to a Log File | Reading Text from a File | Writing Text to a File | Reading Characters from a String | Writing Characters to a String | Basic File I/O | DirectoryInfo | CreationTime | FullName | FileInfo.Length | DirectoryInfo.GetFiles