Copying Large Files And Determining File Size Mid Copy?
Oct 31, 2011
I'm using "My.Computer.FileSystem.CopyDirectory(...)" to copy large directories (30-50gb) from one mapped share folder to another. Using "FileInfo.length" to add up all file and subfolder sizes, determines the 'origin directory' size just fine. However, if I use the same method for determining the size of the 'destination directory', mid copy, it returns the full file size, despite the copy not yet being complete.I'm at a loss as to why, as this method works fine in testing, going from a local PC t
Private Function FolderSize(ByVal dir As String) As Long
Dim Size As Long = 0
Dim d As New DirectoryInfo(dir)
[code].....
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Dec 11, 2011
I wrote a program to download and play AVI files the files are large in size and long time wise. I have the files playing as they are being downloaded but i can't see how long the file is or seek reliably. i was reading that the AVI headers are in the last 512kb of the AVI file *why would't they put it at the start* lol so my question is is there a way to download the last 512Kb of the file i'm downloading. i have the Bytes Read and Length of the file while its downlaoding i'm just not sure where to go from there, or how to do it atleast. If i had the length in time of the Avi file i could set the trackbar to be able to seek properly. or if someone has an idea how i could get the time of the video by using fps and some math i could prob do it that way too but idk how i would tell how i can find how many kb are in the fps i'm sure it changes so think that way is't going to be reliable. how to get the last 512kb would be the best option not sure if it can be done even.
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Mar 27, 2009
I've got an app which uses a background worker to copy files. It works fine but some files are quite large and it "appears" as though the app isn't doing anything. Is there an alternative to the File.Copy method of copying files so I can report on the progress of individual file copies, like the percentage complete?
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Jan 29, 2009
How do you recommend I copy large files over the LAN (>20GB)Currently I am using File.Copy.Another question I have is how can I implement this class to be self contained, meaning that it would report progress to the object that called it? or do I have to define a delegate in the calling object?
Code:
Public Class cCopier
Private Delegate Function CopyProgressRoutine(ByVal totalFileSize As Int64, ByVal totalBytesTransferred As Int64, ByVal streamSize As Int64, ByVal streamBytesTransferred As Int64, ByVal dwStreamNumber As Int32, ByVal dwCallbackReason As Int32, ByVal hSourceFile As Int32, ByVal hDestinationFile As Int32, ByVal lpData As Int32) As Int32
[code].....
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Oct 16, 2010
I'm willing to create a program that will determine the size of a file imported in OpenFileDialog After a RAR Compression. I'm not sure what's the ratio of the rar compression,
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Aug 15, 2011
i need to use copy clipboard for copying files for example i ll copy some file then i need to save this somewhere in my program how can i do that? i searched little but i just can find copying strings. :S I need more than that :)
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Jan 29, 2010
I have created an vb.net windows application. In the application i have 2 xml files (e.g., Pre.xml & Post.xml) & the 2 files are same structure.
My requirement is compare the pre & post xml files and get the differences between xml files. Like what are all the newly added nodes, removed nodes and modified nodes as well.
I tried with XmlDiffPatch.Dll, it is working for small size xml files, but in my case xml file size should be upto 100+ mb.
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Apr 13, 2009
I am using this code to write files
Try
Dim ObjWS As New localhost.Service
'ObjWS.AssigningDataToTemplate(1550, arrValues)
[Code]....
Here i got proble to send a large size of file like 500 mb file etc
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May 1, 2009
Is there anyway to reliably know when a large file has completely finished copying to a particular folder? For example, Computer1 copies a large file to Server1Share1. On Server1Share1, I want to do something AFTER the file is done copying, without Computer1 intervention.
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Aug 30, 2010
I'm trying to browse for a large file and copy it with a background worker but get the folling error:"Current thread must be set to single thread apartment (STA) mode before OLE calls can be made. Ensure that your Main function has STAThreadAttribute marked on it. This exception is only raised if a debugger is attached to the process."
Code:
Private Sub BW_CopyEXE_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BW_CopyEXE.DoWork
Dim fullFilename As String
[code]....
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Jul 5, 2011
Is there anyway to reliably know when a large file has completely finished copying to a particular folder? For example, Computer1 copies a large file to Server1Share1. On Server1Share1, I want to do something AFTER the file is done copying, without Computer1 intervention.
[Code]...
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Nov 22, 2010
How to compress large mp3 files :
I want if i have a 5 mb files then it can be converted to 1mb or low ...so that the high beats and music would be very low.
i want the coding for that in vb or vb.net ?
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Aug 11, 2009
Here's my
[Code]...
During the file copy, Label2 isn't being updated. In fact, my whole form goes non-responsive. How can I fix this?
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Dec 14, 2009
I cannot do the following:
File.Copy(Application.StartupPath & "wait.exe", "%APPDATA%WAIT.EXE")
Can someone remind me how I got about copying a file to that location?
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May 22, 2012
So, I have a task where I need to basically copy about 600,000 PDFs, some of which can be 5-6 MBs from one network fileshare to another network fileshare on another pc.Now, I crawled through the directories, sub-directories etc etc and created what I call a Filename/Filepath Database lookup table. This table contains the name and the unc fileshare path of each file which comes in handy.I have used Multi-threading and File.Copy to "copy" the files and I getting about 45K files per 4 hours which I need to be significantly faster then that and I am seeing performance degrade over time
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May 23, 2011
I have created a simple Backgroundworker process to copy a large file (30GB). Is there any way to report the progress of that file copy?
I'm using System.IO.File.Copy to perform the copy. I've seen a few posts/blogs that suggest comparing the bytes copied with the size of the source file but that seems like a huge overhead in this case.
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Mar 3, 2009
i need to read a large file stream binary my code is Dim sr As New IO.FileStream(srcFile,
[Code]..
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Jul 11, 2011
im trying to create a dialog allowing the user to change the image currently being displayed to something they choose.the error occurs when i hit the system.io.file.copy().heres the function.
This is the event that calls the function to copy the file - its works fine
Try
'get integer value of selected movie
[code]......
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May 3, 2009
I have a label which appears full screen on a projector (VGA 2). In this label I will be sending strings. Some one liner's, some wrapped paragraphs. Some multi-line with carrage returns. My goal is to have the font dynamically change size to be as large as possible without overflowing the fixed label size.
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Jun 18, 2009
im looking for code to copy the files from the floppy drive to a removable drive on the computer.For example:
Copy A:contents to Z:contents
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Mar 28, 2011
I'm trying to copy multiple files from a directory, put them into an array, then copy just the 30 newest files(I haven't coded the 30 newest loop yet). I added a list box to the following code just to ensure the all the files are storing into the array properly... they are. When it try's to copy, it renames the first file to .log, then tells me that the .log file already exist. How do I get it to copy and keep the source file name in the destination folder Eventually I'll loop this and grab only 30 of the files.
Here's the code I'm playing with:
Private Sub transferButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles transferButton.Click
[code].....
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Feb 22, 2011
I have an issue with the Windows permission system. And every time it tries to do something that needs a windows permission (to be ran as administrator) it fails !
At the moment I was trying to implement an updater which should download a file from an ftp site but because copying a file into one of the program files folder requires a permission I am not able to do this.
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Oct 8, 2011
I have a large file (2.7GB). I need to split it into smaller files. How to split a large file into smaller files using VB.NET 2003? Cannot use LINQ and the resources (cpu and memory) on operating environment are very limited (it is a shared hosting environment).
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Aug 16, 2009
[Code] each file is about 30 kilobytes in size, and they contain raw hardware statistical information in a comma-deliminted format. I want to do the following with these files as my end-result.
NEWFILE.CVS contains the contents in this format:
metric_group_001 metric_group_002 metric_group_003 metric_group_004 etc.
I don't want APPEND, I want to concatenate the contents of these files into one large master file. I am able to do this MANUALLY, but I need to have a DYNAMIC method of doing this because of the number of files will change depending on the test we are doing with the hardware. This is the code I am using to do this process manually and it does work, but I need a DYNAMIC method in place. [Code]
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Aug 28, 2009
I am using zipforge.net to archive files in a small backup program I am creating. Everything works fine however if I try to archive a large number of files the process of zipping them gets slower the further along in the job it gets.
Example: I have a directory that contains a little over 100,000 files in it. Each file is only about 200k of text. When I use the zipforge zip class it starts zip'ing very quickly but as it gets about 40% of the way through the directory it starts to slow down... at about 60% its working at a snails pace.
Memory usage for my solution also goes up proportionate to the archive file size as it grows. Currently it takes around 26hours to backup this directory which only contains 4 gigs worth of information.
If I use a program like winzip I can zip the folder in less than an hour. I am thinking there has to be a way to write to the end of the zip file without having to open it every time or without keeping it open. My backup software scans the specified folder and writes each file path and name into a text file. Then it reads the text file line by line and passes the path + file info to the zipforge addfile().
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May 9, 2011
I am trying to upload 2 large files to a ftp server by uploading as one file to a location. I have it working if the files are small but it crashes with large files.
For i As Integer = 0 To filelist.Count() - 1
Dim fRequest As FtpWebRequest = WebRequest.Create(ftpPath & "/Reports/" & filelist.Item(i))
fRequest.Credentials = New NetworkCredential(username, psswd)
[code]....
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Jul 15, 2009
I wrote a cleanup program to go through some directories and delete files based on if the creation date is older than say 6 months. It works fine with some of the directories I have that contain around a few thousand small files. However, there is one directory (that contains small backup files from another program) that is loaded with over 300,000 files and it locks up on me as soon as I read in the first file in that directory.I am convinced it is the directory has too many files in it to open it. The server that the directory is on is slow. It takes a half hour to open the directory while on the server itself. I know it will take forever to delete the amount of files I want to delete, but I don't understand why it gets stuck and hangs there with no error message.Here is where I get stuck. Listbox1 is the directory I'm attempting to access
For Each selectFile In My.Computer.FileSystem.GetFiles(ListBox1.Items.Item(Count), FileIO.SearchOption.SearchTopLevelOnly, "*.*")
compFile = Path.GetFileName(selectFile)
[code].....
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Jan 21, 2010
In word/excel/office programs when you press the file menu item at the bottom a list of files recently used are shown, i would like to do a similar thing but i would like to put files from a certain folder with a certain extension (.xml) into my file menu item so the user can select to view the files.
I think i need something like:
For each file (extension .xml) in myFolder
If menuItem = Nothing
[code].....
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May 9, 2011
I would like to upload files using the ASP FileUpload control. However, if I try and increase the limit to about 10000 kB, it doesn't work and accepts files only upto 4 MB in size and I get an error saying that the connection to the server was reset. I referred: [URL]..but when I modified the web.config.comments file, nothing happened. Where am I going wrong?
Also, I wanted to know how this would work when I deploy it on the web server. I'm asking because in the code behind, I'm still giving a hard coded value for the path where the file is to be uploaded. How does this work?
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Nov 21, 2009
I am trying to develop an app that will export a large amount of zip files all of which have the same single file in them - simply named 'dw' (with no extension). They will all be in the same directory. I want the file 'dw' to be renamed to the zip file name + .tif. (I will actually eventually need for this to use the magic number to determine if the file is a .tif or a .rtf.) I have been able to get it to cycle through, if the file is NOT renamed. I seem to run into issues when I want the file renamed. It just creates the first .tif file and thats it. I think its actually just cycling through but everything is getting that same name. For the record i am not a programmer by trade, just trying to help with something at work - thus I know the code I have peiced together probably isn't 'by the book'
Dim p As New ProcessStartInfo(ByVal unzipit As String, ByVal zipdir As String, ByVal arg As String, ByVal arg2 As String)
Dim di As System.IO.DirectoryInfo
di = New System.IO.DirectoryInfo(zipdir)
For Each diar In di.GetFiles()
[code]....
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