Creating FileInfo Objects

C# Tutorials - Herong's Tutorial Examples

∟Creating FileInfo Objects

This section provides a tutorial example on how to create a FileInfo object to represent a specific executable file using the FileInfo class constructor FileInfo(fileName).

If you read the reference of FileInfo class, you will see that a constructor method is provided to allow you to create a FileInfo object for a file based on the specified file name.

FileInfo(fileName) is the constructor method that returns a FileInfo object representing the specified file. "fileName" is a string representation of the full path name of the specified file.

Here is a quick sample C# program that shows you how to use the FileInfo(fileName) constructor method.

// FileInfoTest.cs
// Copyright (c) 2016 HerongYang.com. All Rights Reserved.

using System;
using System.IO;
public class FileInfoTest {
   public static void Main() {

      // Creating the FileInfo object to represent cmd.exe
      FileInfo cmdFile = new FileInfo("\\Windows\\System32\\cmd.exe");

      // Printing out version information of cmd.exe
      Console.WriteLine();
      Console.WriteLine("Name: {0}", cmdFile.Name);
      Console.WriteLine("Directory: {0}", cmdFile.Directory);
      Console.WriteLine("FullName: {0}", cmdFile.FullName);
      Console.WriteLine("Last Write Time: {0}",
         cmdFile.LastWriteTime);
      Console.WriteLine("Length: {0}", cmdFile.Length);
   }
}

Compile it with .NET SDK 4.6.1 and run it:

C:\herong>\windows\Microsoft.NET\Framework\v4.0.30319\csc
   FileInfoTest.cs

C:\herong>FileInfoTest.exe

Name: cmd.exe
Directory: C:\Windows\System32
FullName: C:\Windows\System32\cmd.exe
Last Write Time: 11/20/2010 7:17:00 AM
Length: 302592