C# Windows File System Operations

C# File Input and Output

C# allows you to manipulate directories and files using various classes related to directories and files, such as the DirectoryInfo class and the FileInfo class.

DirectoryInfo Class

The DirectoryInfo class is derived from the FileSystemInfo class. It provides methods for creating, moving, browsing directories and subdirectories. This class cannot be inherited.

The following table lists some commonly used properties of the DirectoryInfo class:

The following table lists some commonly used methods of the DirectoryInfo class:

For a complete list of properties and methods, please visit the Microsoft C# documentation.

FileInfo Class

The FileInfo class is derived from the FileSystemInfo class. It provides properties and methods for creating, copying, deleting, moving, and opening files, and is helpful for creating FileStream objects. This class cannot be inherited.

The following table lists some commonly used properties of the FileInfo class:

The following table lists some commonly used methods of the FileInfo class:

To view the complete list of properties and methods, please visit Microsoft's C# documentation.

Example

The following example demonstrates the usage of the mentioned class:

using System;
using System.IO;

namespace WindowsFileApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create a DirectoryInfo object
            DirectoryInfo mydir = new DirectoryInfo(@"c:\Windows");

            // Get the files in the directory and their names and sizes
            FileInfo [] f = mydir.GetFiles();
            foreach (FileInfo file in f)
            {
                Console.WriteLine("File Name: {0} Size: {1}",
                    file.Name, file.Length);
            }
            Console.ReadKey();
        }
    }
}

When you compile and run the above program, it displays the names and sizes of the files in the Windows directory.

C# File Input and Output