[Solved] Lost in ZIP Extensions

[Fit2Page]

Hi,

 

I am kinda lost in the big ZIPLibrary forest.

Ik downloaded NuGet Zip. Extension, but not recognized as Telerik.Windows.Zip.Extensions, only as Telerik.Zip.Extensions.

Also the commands are not recognized, see screenshot.

I must re-factor some old code, can you give some pointers?

 

Marc

[Rumen]

Hi Marc,

You are on the right track. Starting with Q3 2026, Telerik Document Processing uses platform-agnostic namespaces. As part of this change, Windows was removed from all Telerik Document Processing and ZIP namespaces.

Therefore, the namespace you see is correct: Imports Telerik.Zip.Extensions

instead of: Imports Telerik.Windows.Zip.Extensions

The Telerik.Windows.Zip portion can still appear in the DLL/assembly name and in the physical reference files. This is expected: the assembly and NuGet package names have not changed; only the namespaces used in code have changed.

Please update the imports in the affected files as follows:

Old namespace	New namespace
Telerik.Windows.Zip	Telerik.Zip
Telerik.Windows.Zip.Extensions	Telerik.Zip.Extensions
Telerik.Windows.Documents.*	Telerik.Documents.*

For example, your imports should be:

Imports System.IO
Imports Telerik.Zip
Imports Telerik.Zip.Extensions

The ExtractToFile method is an extension method for a ZipArchiveEntry. Therefore, it must be called on entry, rather than on ZipFile.

The equivalent of your old code, including overwrite support, is:

Using archive As ZipArchive = ZipArchive.Read(str)
    For Each entry As ZipArchiveEntry In archive.Entries
        entry.ExtractToFile(
            Path.Combine(dxftools.TargetFolder, entry.Name),
            True,
            Nothing)
    Next
End Using

The relevant method signature is:

ExtractToFile(
    source As ZipArchiveEntry,
    destinationFileName As String,
    overwrite As Boolean,
    timeout As Nullable(Of TimeSpan))

You can check this forum for info about the TimeSpan param and the ExtractToFile method - https://www.telerik.com/forums/extracting-files-from-zip---unable-after-last-update---missing-extracttofile 

Additional information is available in the following resources:

• Migrating to Platform-Agnostic Namespaces
• ZipFile API Reference

Regards,
Rumen
Progress Telerik

[Fit2Page]

Thanks Rumen! Problems solved.