Why Does File.Exists Fail To Find 6 / 115 Files In Directory / When Same Process Just Downloaded All
Sep 5, 2011
I have a process serves as an application updater.It checks it's local cache of files and compares this against list of files online.On it's first run there are no files in the local cache and it therefore downloads ~100 of these files.[code]This appears to work very well, since Explorer confirms that all files are extracted and available.However when I later run this process again, it cannot verify the existence of 6 of these files and therefore tries to download them despite the fact that they are clearly both present and up to date.The offending code is a simple File.Exists call which appears to deny the local existence of these files, and therefore tries to get them again.The system continues to work well, but over time the continual downloading of these 6 files is going to get kind of silly.
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Feb 9, 2012
I am currently working on a project, which requires to download files from the internet and copy them to certain directory's... I've done the downloading part but I can't seem to get the directory working. The directory is "special" E.G. Appdata Program Files etc., and well when I tried just using %appdata% it seemed to create a new directory NAMED %appdata% rather than actually goto appdata...
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Feb 15, 2011
Anyways, i have coded a video downloaded and i want to include a converter as a separate exe file. But obviously people may have different file directories so a simple piece of code i have used won't work. This is what i have: Also where would i place the exe file?
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Aug 28, 2011
I currently have a bunch of text files I need to edit in a folder, I need to edit each file and remove the same line but not all files have this line, so I need to create a script that needs to check if the line exists then remove it.I have 1000s of files, that's why I need help to be able to create a script that does it for me instead of me editing each one manually.I am not sure on how to do this, but I am sure it is not difficult for people that have good experience with VB.net.
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Jun 3, 2010
I have a SQL Server table with a list of files (path + filename), and a folder with multiple layers and files in each layer. I'm looking for a way to reconcile the two without having to process the list twice. Currently, I'm doing this:
For Each f as FileInfo In FileListFromDatabase
If f.Exists is False, mark it as deleted in the database
Next
[Code]....
Is there a better way to do this? I'd like to avoid converting all the matching files (of which most will be) to FileInfo objects twice. Since I'm a T-SQL developer first, I'm picturing something like an OUTER JOIN of the two lists where they don't match. Something LINQ-ish?
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Feb 9, 2012
I have some problem with copying the file from one Directory to another directory by create the folder if that folder is not exists in destination directory.
Example:
Source path: C: emp est1.txt
destination path: C:Data
[code].....
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Aug 10, 2009
How can i delete image files (ex *.gif) that might be in use, by another process in a directory?
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Jun 13, 2009
I have some code that loads an XML which works fine, then it checks in a certain directory for a file. Then if that file exists it displays the file name if not it dispalys "no image available"
VB
FolderBrowserDialog1.ShowDialog()
If RBFP1.Checked = True Then
TXTPath2.Text = FolderBrowserDialog1.SelectedPath
If My.Computer.FileSystem.FileExists(TXTPath2.Text & "DatabasesFuture PinballFuture Pinball.xml") Then
[Code] .....
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Sep 5, 2009
i want to check if a file exists in the Application.StartupPath. I tried My.Computer.FileSystem.FileExists but that checks the whole computer doesn't it. ? How do i check if a file exists in a directory?
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Jun 10, 2010
I'm making a Cleaner for my PC that could delete all files with a specific name.So I have all the names in a .txt file, like:
A
B
C
D
Now I need somekind of function that would search in a directory ( The user gives the dir. in a textbox ), and its important that it would also search in all sub folders and see if there is a match to any of the names in the .txt file. And it shall not care about in what format the file is. It can be in .exe , .txt or any format.
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Aug 10, 2009
What I to do is be able to find out if a text file or any file exists on a server such ass we all know that exists but how can I get VB to produce a message box telling me whether this file exists let alone get VB to search for the file, I've search the site and the MSDN but I cant figure out what code i need to do its been bugging me for weeks
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Apr 22, 2012
This is troubling me as the FileExists command needs a full path.
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Apr 17, 2010
In vb.net how do you check if a ANY directory exists inside a directory I would need to know if there is a folder inside the c:windows directory (WITHOUT knowing if there is ANY directory is in there).
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Sep 6, 2009
I have a database table where the user marks files to be downloaded. Subsequently, I browse this table and need to create a fileList to pass to an ActiveX downloader. My routine works locally and on the server for ONLY the first file. I know my logic must be bad, but I cannot find it. All of these files are always in the same server directory which is as follows:
"D:inetpubvhostsWebSite.comsessionVideos"
Sub (GetFileList)
Dim dtVideosSelected As New DataTable
[Code].....
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Oct 26, 2009
I'm writing something to download about 200 small (Around 200kb) files at a time. I pass the file urls off to a class which starts the downloads. The problem is that it'll start the download (Just creates a 0kb file) and then slowly downloads each file one by one, waiting for the next to complete despite this being a threaded class. This would be fine but after about a minute, windows removes all of the 0kb files and I'm stuck with only a few of the files being downloaded. How to get multiple files to be downloaded concurrently?
Imports System.Net
Imports System.IO
Public Class DownloadClass
Public downloadUrl As String
Public folderURL As String
[Code] .....
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Apr 19, 2012
Any way to save all files that are being downloaded trough the WebBrowser I've made in my Visual Studio 2010 to a specific location, by letting user to chose option save file without knowing where it saves. Or maybe to don't show the "save file" thing at all.
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May 31, 2010
This code seems to be accurate when comparing to the many examples that are similar on different forums and I would think it should work:
Dim pC As New Process
pC.StartInfo.CreateNoWindow = True
pC.StartInfo.RedirectStandardOutput = True[code]....
When I remove the pC.BeginOutputReadLine() command, the application continues to function, but nothing is added to lbOutput.
With the pC.BeginOutputReadLine() command, it gives the error "vshost.exe has stopped working"
Either way, my batch file does what its supposed to do. Any one have any ideas what I am doing wrong with the process?
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Feb 26, 2010
I've just downloaded SQL server express and have created a database in there. Now back in my VB.NET application from Visual Studio how do i find/connect to it?
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Jan 11, 2010
i downloaded a couple of projects from the codebank about the listview and the treeview but when i unzip the zip folder,i found only the .dll and xml files present over there...
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May 13, 2011
the application is used to find a given file name in a given file directory and put messages to remind user at a given time.
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Aug 3, 2011
I have VB 2008 Express installed in my PC. I downloaded a program source code written in VB6 but could not open the files. What do I need to do to get this codes displayed.
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Feb 20, 2012
I'm trying to load the most recent file from a directory, but my following code doesn't work. Am i getting something obvious terribly wrong?!
Dim myFile = Directory.GetFiles("C:UsersJoeDesktopXML Logs").OrderByDescending(Function(f) f.LastWriteTime).First()
I get two error messages:
Data type(s) of the type parameter(s) in extension method 'Public Function OrderByDescending(Of TKey)(keySelector As System.Func(Of String, TKey)) As System.Linq.IOrderedEnumerable(Of String)' defined in 'System.Linq.Enumerable' cannot be inferred from these arguments. Specifying the data type(s) explicitly might correct this error.
And:
'LastWriteTime' is not a member of 'String'.
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May 30, 2012
making a simple web browser for work eeh, what like to know is if its possible to save a file of a particular extension to a particular file.I currently use googels chrome when downloading a file it places this (regardless of extension) in a downloads folder without asking where I ant to download this too.
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Dec 6, 2009
im trying to find a file in a directory with a specified file path
filePath(j) = B:\Movies\Action\Transformers 2
im searching for front cover, when i find it im loading it into my picture box
If path.Contains(trimFilmTitle) = True Then
'find Front Cover
file_names = My.Computer.FileSystem.FindInFiles(filePath(j), "folder-front", True,
[Code]......
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Feb 8, 2012
I want to create a file removal which revieve directory files to delete from a text file..[code]
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Sep 27, 2010
How to get full path of current directory of process from where process starts Like if i use my software to start somefile then I want my software to know where she started it from ( files path) What I mean is the file I opend using my softwares location.
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Sep 9, 2010
I am using a System.Diagnostics.Process to execute dirquota.exe. I catch an exception at .Start() which is "The system cannot find the file specified".
I am now doing:
foreach (var fi in new DirectoryInfo(@"C:WindowsSystem32").GetFiles())
{
Console.WriteLine(fi.Name);
}
This outputs pretty much every file in that directory apart from dirquota.exe.
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May 21, 2009
I have a fairly straight forward peice of code that just tries to set the default saved directory for a standard .net save dialogue to a specific folder. If that folder doesn't exist, it sets it to the desktop. This works fine for everyone but one user who is getting the following error: Could not find special directory 'Desktop' How is that even possible?
[Code]....
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Jul 5, 2010
How can i extract all the files from a .zip file into a directory? I have to do this because no free file hosting allows .exe files so im going to have my program download the .zip file containing the .exe then extract that file when its downloaded.
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Jan 31, 2012
I have a context.Request.QueryString item that is returning the wrong value in the ProcessRequest method of a .ashx handler.
The code is like so:
Public Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
Dim strOrderItems As String = Convert.ToString(context.Request.QueryString("OrderItems"))
End Sub
One of the values returned by "OrderItems" is wrong. How can I find out what process has called this method to fix the incorrect data?
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