How to: Create a Directory Listing
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The following code example shows how to use the I/O classes to create a listing of all files with the extension ".exe" in a directory.
using System;
using System.IO;
public class DirectoryLister
{
public static void Main(String[] args)
{
string path = Environment.CurrentDirectory;
if (args.Length > 0)
{
if (Directory.Exists(args[0]))
{
path = args[0];
}
else
{
Console.WriteLine("{0} not found; using current directory:",
args[0]);
}
}
DirectoryInfo dir = new DirectoryInfo(path);
foreach (FileInfo f in dir.GetFiles("*.exe"))
{
string name = f.Name;
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 .exe extension, along with their file size, creation time, and name. Assuming that there were .exe 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.exe 664 7/27/2000 3:11 PM C:\MyDir\Bin\tst.exe 403 8/8/2000 10:25 AM C:\MyDir\Bin\dirlist.exe
If you want a list of files in another directory, such as your C:\ root directory, pass the argument "C:\" into the executable generated by compiling this code, for example: "testApplication.exe C:\".
Note
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Visual Basic users may choose to use the methods and properties provided by the FileSystem class for file I/O. |
