Question

I have to make a simple zip file using Visual Studio and VB.NET 2003.

After some googling I got to this page: http://www.digioz.com/tutorials/zip_unzip_vbNET/Zip_and_Unzip_VB_NET_1.html wich basically provides me 3 DLLs with classes that are ready to zip files.
When I try to create an instance of the class like the tutorial tells me to:

Dim zp As New CGZipLibrary.CGZipFiles

I get this error:

COM object with CLSID {293364BA-43F8-11D3-BC2D-4000000A2806} is either not valid or not registered.

Ideas?
If anybody got a better/easier approach to zip files using VB.NET 2003 it would be helpful too.

Thanks.

EDIT:

Thanks for all who answered, but I’ve used a different approach than the suggested ones to zip my files.
I used the Shell function of the Microsoft.VisualBasic.Interaction class like this:

Shell("zip -j " & fileName, AppWinStyle.Hide, True)

Thanks again for those who dedicated their time trying to help me!

Answer 1

It looks like that library you are trying to use is an old COM dll. That means you have to register the dll first using regsvr32.exe before you can use it. However, I would recommend using a native .NET (managed) library. Unless it doesn’t meet your needs, I’d simply recommend looking at the GZipStream class which is part of the .NET framework.