ZIP a file using VB.net

Question

User-54634383 posted

I'm currently sitting with a solution that requires 'Zipping' a file. There are many solutions using Java or C# code, but none I can implement using the server I'm working with so it needs to be done in VB.

 

Any answers will be greatly appriciated.

Answer 1

User-815382200 posted

Hi,

VB and C# are equivalent, everything that can be written in c# can be written in VB too. Good news is also that you can directly convert C# to VB with this tool: http://www.developerfusion.com/tools/convert/csharp-to-vb/

 

Here is a simple method that compress a file and use no external libraries:

public static void GZipCompression(string input, string output)
        {
            FileStream fs = new FileStream(input, FileMode.Open, FileAccess.Read, FileShare.Read);
            byte[] data = new byte[fs.Length];
            fs.Read(data, 0, data.Length);
            fs.Close();

            FileStream compressed = new FileStream(output, FileMode.OpenOrCreate, FileAccess.ReadWrite);
            GZipStream gzip = new GZipStream(compressed, CompressionMode.Compress, false);
            gzip.Write(data, 0, data.Length);
            gzip.Close();
            compressed.Close();
        }

Just pass correct paths using Server.MapPath().

Hope it helps...

Answer 2

User197322208 posted

You can use this component (source in C#, but you can add as a reference the dll)

http://www.icsharpcode.net/OpenSource/SharpZipLib/Default.aspx

or , for native GZip, you can use

http://msdn.microsoft.com/en-us/library/system.io.compression.gzipstream.aspx

Answer 3

User1283497924 posted

Hi,

plz check the link

http://www.codeproject.com/KB/cs/unzipC_usingJ_.aspx

http://www.emailarchitect.net/eacompression/sdk/html/object_overwrite.htm

http://devpinoy.org/blogs/keithrull/archive/2008/01/25/how-to-create-zip-files-in-c-with-sharpziplib-ziplib.aspx

Answer 4

User-731863672 posted

If you reference a binary .NET library, it does not matter whether it has been compiled from C#, VB or another .NET language.

For example our component Rebex.ZIP is written in C#, but all samples and tutorials are published both in C# and VB.NET.
Your question - zipping some files, would be solved by following two lines of code:
(taken from tutorial page http://www.rebex.net/zip.net/tutorial-zip.aspx)

 
Imports Rebex.IO.Compression' add all *.TXT files from the local directory C:\Data\  
' to the directory \Data-2010 (within the Zip file) 
' (ZIP archive C:\archive.zip doesn't have to exist) 
ZipArchive.Add("C:\archive.zip", "C:\Data\*.txt", "\Data-2010")

The code need to reference .DLL which can be downloaded here.