I am trying to figure out the size of a file after compression.
By using fileInfo.Length I can get the size but that doesnt take into account compression.
I have tried the Api GetFileSizeEx but it always returns zero so maybe I didnt do ti corectly...
I have File Like "Sample.bak" and when I compress it to be "Sample.zip" I lose the file extension inside the zip file I meann when I open the compressed file I find "Sample" without any extension.
I use this code :
Dim name As String = Path.GetFileName(filePath).Replace(".Bak", "")
Dim source() As Byte = System.IO.File.ReadAllBytes(filePath)
Dim compressed() As Byte = ConvertToByteArray(source)
System.IO.File.WriteAllBytes(destination & name & ".Bak" & ".zip", compressed)
Or using this code :
Public Sub cmdCompressFile(ByVal FileName As String)
'Stream object that reads file contents
Dim streamObj As Stream = New StreamReader(FileName).BaseStream
[CODE]...
I need to compress the file without loosing file extension inside compressed file.
How do I get the Compressed state of a file[code]...
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View 1 RepliesI am trying to programmatically extract from a compressed zipped folder which has the path of c:abc.zip and 4 files within the folder (one.txt, two. txt,three.txt and four.txt). I want to place two.txt in a destination path of c:xyz wo.txt.
View 3 RepliesI don't really know how to use compression in VB.net, so I was wondering if someone could explain it to me. I'm also wondering if it is possible to create a compressed file with your own extension.
View 13 RepliesI would like to decompress/compress text files in zlib format.
Here's what I tried:
- Downloaded zlibwipa.dll from [URL] and tried to add a reference to it but got an error saying it is an invalid assembly.
- Downloaded DotZLib from [URL] but can't get it to work, error message: Unable to load DLL 'zlib.DLL': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
- Looked at this [URL] but couldn't do much with it
This files are textfiles created from flash with ActionScript 3.0, but compressed, using the ByteArray class's compress() method. I know Flash uses zlib algorithm for this, and I would like to open and use this file from vb.net.
I am using something like :
FileOpen(1, OpenMapDialog.FileName, OpenMode.Binary, OpenAccess.ReadWrite)
Dim a() As Byte = {}
FileGet(1, a)
[Code]....
How do I decompress a zlib compressed file with byte arrays?
How do I write a Text file as a compressed (zipped ) file?Using vb 2008, .Net
View 5 RepliesI want to paste a file from the clipboard that has been copied from a compress folder using VB.net. By examining the clipboard, I see there is a FileGroupDescriptorW which seems to contain some information about the file. But I have not found how to use the information to grab the file and paste it.
View 1 RepliesSet picturebox size to size of image file?
View 5 RepliesI want to add multiple files to a single compressed file using System.IO.Compression. And extract them back...So I found this code on MSDN which works fine, but does not support adding multiple files into 1 single compressed file. [URL]
View 1 RepliesI know .NET Framework 3.5 has a class which allows you to compress invidual files.But how can I add multiple files to a single output compressed file and extract them back later without using 3rd party assemblies just using .NET Framework in Visual Basic?
View 3 RepliesIn [URL]I asked how do I get the compressed state of a file and I got a answer that works for files that is but now I'm looking to find out weather or not a Directory or Disk is Compressed Does any body have an answer
View 2 RepliesI wrote a vb.net program that can view the documents It uses a reader and decompresses the sql blob to an outputStream and displays the document after a Response.Flush.We sent the code and databases to another group to host this website themselves. They can run the website but when they view the documents the documents open with a page full of small squares.
View 1 RepliesI need to open an archive and list the contents, size of files, and crc of files inside any compressed file. Be it rar, zip, ace, lha, 7zip, etc.. What's the easiest or best way to do this?
View 1 RepliesI have tryied to add the attributes but it dosn't make them that.If there is a way to so that tell me...
View 7 RepliesNow all went well about from using the structure correctly. The working of the structure was perfect. How ever i missed Two important issues. The structure needed a fixed size of 10 items (9 in programming terms starting from 0) And also out of the 5 items allowed to be chosen as one of the member types for the structure a limit of 5 items of that particular type.
[Code]...
Alright here's my situation: I have a form. This is a very small form that can be moved with the mouse (formborderstyle=none). The transparencyKey is 0,0,1. The form back color is 0,0,1. There is a label on the form. I drag files to this label(its backcolor is black[0,0,0]). What I want is for the filesize to be checked. I already have the uploading to ftpcode, I just want to know if the file is above my limit I set. (250mb per file)
[Code]....
I like to compress the xmldata before the data is provided to the client as an excel file. I am trying to compress and deliver it as a .zip file. its not working Here's my code below. I tried compressing it, converting it to bytes etc etc. The issue with below code is, the XSL transformation is not happening properly and the output excel file is raw xml with some .net exception at the end. (that's what I see on the .xls file that's downloaded at the end) Before I started working on compression my below code was working fine that gives properly formatted excel file from the xml input. the excel file is so nice you can't even tell it was from XML.
[Code]...
Language: vb.net
File size: 1GB, and stuff.
Encoding of the text file: UTF8 (so each character is represented by different numbers of bytes).
Collation: UnicodeCI (when several characters are essentially the same, the most popular version will be the one unique.). I think I know how to handle t his one.
Because each character is represented by different numbers of bytes and each line has different numbers of characters, the number of bytes in each line also vary.
I suppose we have to compute hash for each line. We also need to store buffers location where the line each. Then we have to compare buffers. Then we will check whether the same line shows up or not.
Check file size and take backup and re-create file? I am using this function[code]...
View 4 RepliesI was using the following code to check the file size of a data file on my local machine. Now the data files have been moved to a mapped network drive and this code no longer works. What do I need to change or how do I access file size on a mapped drive?
Dim MyFile As New FileInfo(MyFilePath)
Dim FileSize As Long = MyFile.Length
I'm working on a school project right now and I have everything fine except this one part of the project: "The audit and errorevent logs should be archived if they are larger than 5K and up you need to keep up to 3 copies of the files." I know how to read and write text files just fine, so I don't need help with that. What I don't know is how to archive a file based on file size, or how to keep up to 3 copies of the files?
View 2 RepliesWhen I rename the file, what happens is that both files stay there, but the renamed file is 0KB and the original that is still there is 14KB[code]...
View 9 RepliesHow can I get the size of a file in MB if the file is located on a server? If the file is on a computer I would do this:[code]......
View 5 Repliesin my application i want the size of the file which is located on internet
for example: [URL]..how will i be able to get the file size of the above mentioned url.
Does anyone know how I can get the number of bytes in a file on a webserver? Without downloading the file.I have code to download a file, but I cant get the size of the file I'm downloading...
View 2 RepliesI have a problem, i try to open a file, then i open the file, i want to get the size of the file and write in to a ListBox. So if i have a file : 123,00 kb so then i push the button Ok then get the size of the file and write the size into the Listbox.
Cant some one here tell me how i doit, i have try and try, but its not work for me.
Here its my code.:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim alleAttr As Long
If System.IO.File.Exists(lblfilnavn.Text) Then
lstAttr.Items.Clear()
[Code]...
I have a piece of code that does work correctly to get the size of an http file, but it doesn't work on ftp. This is the code (it is in a backgroundworker):
Try
Dim webReq As Net.WebRequest = CType(Net.WebRequest.Create(THE_URL), Net.WebRequest)
Dim webResp As Net.WebResponse = CType(webReq.GetResponse, Net.WebResponse)
[code]....
I (SQL Server DBA) have inherited a VB App, being called in a TSQL Script, that creates a PDF using the Crystal reports. Until a month , PDF was being generated with correct extension and size, but for some unknown reason the app creates a non PDF file with Zero size. Interestingly the script that calls the App and send the PDF created as an attachment in an email via MS Outlook, sends it as PDF with data.
Also when trying to open up the same 0KB file in Acrobat, gives an error:
"Could not open because it is either not a supported file type or the file has been damaged (for example it was sent as an email attachment and wasn't correctly decoded)"
FYI, the Exchange server was upgraded so the email isn't working either and its causing a great pain for management to not to be able to have that report.
