FileInfo Class

public sealed class FileInfo : FileSystemInfo

Summary:

Represents a file in a directory.

Remarks

The FileInfo class provides properties and methods for creating, moving, and managing files, as well as their properties. This class is thread-safe.

When you create an instance of FileInfo, it does not create a new file. It simply creates an object that represents an existing file. You can use the Create() method to create a new file.

Properties

Attributes: Gets or sets the FileAttributes of the current file.

CreationTime: Gets the creation date and time of the file.

CreationTimeUtc: Gets the creation date and time, expressed in Coordinated Universal Time (UTC).

Directory: Gets an instance of DirectoryInfo object representing the directory containing the file.

DirectoryName: Gets the name of the directory that contains the file.

Exists: Gets a value indicating whether the file exists.

Extension: Gets the extension of the file.

FullName: Gets the fully qualified path of the file.

IsReadOnly: Gets or sets a value indicating whether the file is read-only.

LastAccessTime: Gets the date and time the file was last accessed.

LastAccessTimeUtc: Gets the date and time, expressed in Coordinated Universal Time (UTC), that the file was last accessed.

LastWriteTime: Gets the date and time the file was last written to.

LastWriteTimeUtc: Gets the date and time, expressed in Coordinated Universal Time (UTC), that the file was last written to.

Length: Gets the size of the current file in bytes.

Name: Gets the name of the file.

Methods

public FileStream Create()

Creates or overwrites a file in the specified path.

Returns:

FileStream: A new FileStream object.

public void Delete()

Deletes this file.

public void MoveTo(string destFileName)

Moves the current file to a different location.

Parameters:

destFileName: The name of the destination for the current file, which can be a relative or absolute path.

public FileStream Open(FileMode mode)

Opens a file with the specified mode.

Parameters:

mode: A FileMode value that specifies the mode in which to open the file.

public FileStream OpenRead()

Opens an existing file for reading.

Returns:

FileStream: A FileStream object opened for reading.

public FileStream OpenWrite()

Opens an existing file for writing.

Returns:

FileStream: A FileStream object opened for writing.

Example


using System;
using System.IO;

public class Example
{
    public static void Main()
    {
        // Create a FileInfo object for a specific file.
        FileInfo fi = new FileInfo(@"C:\MyDir\MyFile.txt");

        // Check if the file exists.
        if (fi.Exists)
        {
            Console.WriteLine($"File name: {fi.Name}");
            Console.WriteLine($"File size: {fi.Length} bytes");
            Console.WriteLine($"Creation time: {fi.CreationTime}");
        }
        else
        {
            Console.WriteLine("File does not exist.");
        }
    }
}