Check Folder For Modified File Quickly?

Oct 10, 2011

I have a folder that can (hundreds currently) but upwards of 10's of thousands of files. I have a program that gets all file names, and sorts them based upon set criteria and displays them in a treeview. My issue is right now a few hundred files moves fairly quickly when getting files name (path.getfiles), sorting, and returning sorted list for further search and display. My concern is when the number of files starts to increase, alot of these functions will take exponentially longer to perform. Especially my organizing function.

Because my files are part numbers <PartNum><Rev><SubRev><ManuNum>.<extension> I first sort out all different Part numbers first making the list manageable (maximum of a few thousand). Then as you choose a part number to work with, it retrieves all files associated with that part number (maximum of a few hundred).

My concern is everytime I need to look for a file in anyone of those steps, I have to import all file names, search and return correct file path, and Im sure this will become slow as the number of files increase. I dont mind having it do it once then update the list as needed. So I was thinking import and sort all file names at load, and check every so often for and files that might have been modified recently and just update it's entry in the sorted list. But this means my program has to stop, and check all files for changed "modified" time, which too will be slow-ish.

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Check If A File Is Modified?

Jan 15, 2009

scenario:

-folder x resides on server a, server b ,server c

-x contains same set of files in a,b,c

whenever any file gets modified in a, it should get also modified in b and c as well

similarly b->a,c and c->a,b

my idea of implementation is -when ever any file is modified on a server, compare timestamps and force copy the modified in the other two How should i go for implementing it?

1)how to check if a file is modified

2)how often this check should be done and how this should be implemented should a service be running to perform thi check i want to do this using .NET?

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If found I want to delete it.

I can check for a specific file:

If System.IO.File.Exists("C:Labs" & "Lab0.txt") = True Then
msgbox "Files Found"
else-------------> I want to Delete it End If

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Check if file exists in a folder

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I am trying to read this XML document.
An excerpt:
<datafile xmlns:xs="[URL]" xmlns:xsi="[URL]" xsi:noNamespaceSchemaLocation="wiitdb.xsd">
<WiiTDB version="20100217113738" games="2368"/>
<game name=" Wanted: 50 Wacky Jobs (DEMO) (USA) (EN)">
<id>DHKE18</id><type/>
<region>NTSC-U</region>
[Code] .....
It just skips the "While iter.MoveNext" part of the code. I tries it with a simple XML file, and it works fine.

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File Content Was Modified

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[Code]...

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if file 'c:X.txt' has been modified equal to or more than 15 minutes ago, then send key R.
if file 'c:X.txt' has been modified equal to less than 5 minutes ago, then turn on numlock light, if not then turn off light.
if file 'c:X.txt' has been not been modified for the last 4 hours, then send key delete file.

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How do i can make application check Last Modified time from file via FTP.And check out which is your folder's last modified time.If FTP File Modified Time is latest than your file'sfolder then WC.DownloadFile(FilePath/File)

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Jan 4, 2010

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compare a.xml to b.xml..

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For Each fi In aryFi
fidate = System.IO.File.GetLastWriteTime(path & fi.ToString)
fidate1 = System.IO.File.GetCreationTime(path & fi.ToString)

[code]....

Everytime I check to the code, the fidate and fidate1 variables are indeed the correct dates/times of the file it's currently checking. It almost never gets inside the elseif block at runtime though.

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I found this code on the web and I modified it to my .mdb file and my values

CODE:

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I am writing a program to automatically recognize new data log files in a specific folder and proceed to process them in a routine I scripted. I have the program working fine for when I manually place files in there, but I know there will be an issue when my data logger is working because it will create files and then write to them for approximately 12 hours.[code]Which works fine, but how can I modify that or what should I use to force the program to wait until the file is done being modified? Say force it to wait at least 1 minute after the last modification?

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Aug 2, 2010

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[Code]...

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