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Posted 19 Oct 2005

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Find and delete NTFS Alternate Data Streams (ADS )

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3.86/5 (4 votes)
19 Oct 2005LGPL3
A GUI extension of the NTFS library written by Richard Deeming.

Introduction

Do you know what are NTFS Alternate Data Streams? If not, look at Accessing alternative data-streams of files on an NTFS volume, a Richard Deeming article. There you can download the sources and binaries of the NTFS.dll used in my project.

This project is a Windows GUI extension that allows you to Find and Remove all the interested data streams stored on your local drive or a network folder.

The data is returned in a DataGrid and you can sort it by stream name, size, location and file name.

Using the Form

The core of the form uses a recursive search, and each file found is stored into an ArrayList, and so is all the streams information of the file.

C#
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using NTFS;
using System.Threading;
...
C#
private void DirSearch(string sDir, bool subFolders)
  {
   try
   {
    foreach (string f in Directory.GetFiles(sDir))
    { 
     FileInfo FSInfo = new FileInfo(f);
     NTFS.FileStreams FS = new NTFS.FileStreams(f);
      
     foreach(NTFS.StreamInfo s in FS)
     {
      FileInfoStruct fis;
      fis.File_Name = FS.FileName;
      fis.Stream_Name = s.Name;
      fis.Stream_Size = s.Size;
      fis.Location = FSInfo.DirectoryName;
      fis.Creation_Date = FSInfo.CreationTime;
      ArrayFileInfo.Add(fis);
     } 
    }
    // update the results label
    String caption = "Results:  (" + 
                     this.fileInfoData1.FileInfo.Rows.Count.ToString() + 
                     ")";
    this.dataGridResult.CaptionText = caption;
    if (subFolders)
    {
     foreach (string d in Directory.GetDirectories(sDir))
     {
      DirSearch(d, subFolders);
     }
    }
   }
   catch
   {
   }
  }

License

This article, along with any associated source code and files, is licensed under The GNU Lesser General Public License (LGPLv3)

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About the Author

Marco Roello
Web Developer
Italy Italy
No Biography provided

Comments and Discussions

 
GeneralNice but incomplete Pin
Elmue21-May-11 6:43
MemberElmue21-May-11 6:43 
AnswerRe: Nice but incomplete [modified] Pin
CNefarius28-May-11 8:31
MemberCNefarius28-May-11 8:31 
GeneralRe: Nice but incomplete Pin
Elmue31-May-11 0:06
MemberElmue31-May-11 0:06 
GeneralADS on Directories Pin
Dave Nelson12-Oct-06 8:12
MemberDave Nelson12-Oct-06 8:12 
GeneralUpdated NTFS.dll to 2.0 Pin
Moomansun23-Aug-06 13:57
MemberMoomansun23-Aug-06 13:57 
I have updated the NTFS.dll to support .NET 2.0. The filestream used has been changed to support SafeFileHandle, rather than a handle to the file.

A little note to remember, if you try to run this in debug mode under Visual Studio 2005, the threads time out. Running the Release version works perfectly.

I've taken a look around for a freeware app which can list ADS and there is none. So, if there are no objections, I'll add a link to this page and release a compiled version of this very handy app as freeware.
QuestionRe: Updated NTFS.dll to 2.0 Pin
FrEaK_CH21-Sep-06 5:10
MemberFrEaK_CH21-Sep-06 5:10 
AnswerRe: Updated NTFS.dll to 2.0 Pin
Moomansun21-Sep-06 7:59
MemberMoomansun21-Sep-06 7:59 
GeneralRe: Updated NTFS.dll to 2.0 Pin
FrEaK_CH21-Sep-06 12:06
MemberFrEaK_CH21-Sep-06 12:06 
GeneralRe: Updated NTFS.dll to 2.0 Pin
FrEaK_CH25-Sep-06 12:03
MemberFrEaK_CH25-Sep-06 12:03 
QuestionChanges in NTFS.dll? [modified] Pin
FrEaK_CH7-Jun-06 6:21
MemberFrEaK_CH7-Jun-06 6:21 

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