Solved

How to get the contents within a Drive/Volume quickly via Delphi

Posted on 2015-02-02
10
107 Views
Last Modified: 2015-02-04
Using FindFirst I go thru all the files within a disk, this at times takes over an hour.
Does Windows maintain a updated stack of file names which I can pull.

I am aware of Dir /S and it takes similar time as using FindFirst,
0
Comment
Question by:Allan_Fernandes
  • 5
  • 3
  • 2
10 Comments
 
LVL 19

Expert Comment

by:MerijnB
ID: 40585694
I'm quite sure there is no faster way then enumerating all files using FindFirst. You could try using multiple threads for different folders. What is the bigger picture? Maybe some optimizations can be done on another level.
0
 

Author Comment

by:Allan_Fernandes
ID: 40585701
I need it for my backup application. Considered using the File monitoring event (service) but that will reduce the speed of the machine even when backups are not happening.
0
 
LVL 19

Expert Comment

by:MerijnB
ID: 40585706
I still think the file monitoring service is the way to go. If you only use it to note which files are changed while not actually doing a backup, it will only have a very small impact on the speed of the machine. In my opinion it's a much better approach then enumerating all files (which you will probably have to do anyways in the beginning).
0
Gigs: Get Your Project Delivered by an Expert

Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.

 

Author Comment

by:Allan_Fernandes
ID: 40585722
I tried it but the file names keep pouring into the event. eg: Opening windows explorer too causes several file names getting in. As I need new files / deleted files I cannot look only at the edited files. Also I need to compare within my list to avoid multiple lines per file.
0
 
LVL 19

Accepted Solution

by:
MerijnB earned 500 total points
ID: 40585728
Isn't there a reason in the event (created / deleted / edited)? It's been a while since I used it.
0
 

Author Comment

by:Allan_Fernandes
ID: 40585782
Yes there is but I need them all three and windows makes several temp files, which come in too.
But thinking again I may be able to discard some temp folders  etc and make it more efficient.
0
 
LVL 26

Expert Comment

by:Sinisa Vuk
ID: 40586401
there is advanced find file api function FindFirstFile
0
 

Author Comment

by:Allan_Fernandes
ID: 40587959
I am currently using it but was wondering if there was ready-made list via the OS
0
 
LVL 26

Expert Comment

by:Sinisa Vuk
ID: 40588355
Think that FindFirstFile will look into this "list" - if you have files indexed.
0
 

Author Comment

by:Allan_Fernandes
ID: 40588434
Thanks that makes a large difference
0

Featured Post

Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

NTFS file system has been developed by Microsoft that is widely used by Windows NT operating system and its advanced versions. It is the mostly used over FAT file system as it provides superior features like reliability, security, storage, efficienc…
If you get continual lockouts after changing your Active Directory password, there are several possible reasons.  Two of the most common are using other devices to access your email and stored passwords in the credential manager of windows.
This video Micro Tutorial explains how to clone a hard drive using a commercial software product for Windows systems called Casper from Future Systems Solutions (FSS). Cloning makes an exact, complete copy of one hard disk drive (HDD) onto another d…
Windows 8 came with a dramatically different user interface known as Metro. Notably missing from that interface was a Start button and Start Menu. Microsoft responded to negative user feedback of the Metro interface, bringing back the Start button a…

785 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question