CountPaddingBytesChunked Method

Reads the amount of padding at the end of a disk file.

Syntax

public static long CountPaddingBytesChunked( 
   FileInfo file,
   long chunkSize
)

Parameters

file: The file to inspect.
chunkSize: The size of the chunks to read in bytes. The default is 4096 bytes, chosen to balance efficiency and memory usage.

Return Value

The number of padding bytes found at the end of the file.

Exceptions

Exception	Description
System.ArgumentNullException	Thrown if the file argument is null.
System.IO.FileNotFoundException	Thrown if the file does not exist.
System.ArgumentException	If the file does not exists
System.ArgumentNullException	If fileis null

Example

Calculate the percentage of the file that is padding:

FileInfo file = new FileInfo(@"path\to\your\file.ext");
long paddingBytes = file.CountPaddingBytesChunked();
Console.WriteLine($"The file contains {paddingBytes * 100.0 / file.Length:0.0}% padding bytes at the end.");

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

FileInfoExtensions Class
FileInfoExtensions Members