Adding a complete directory to an existing zip file with System.IO.Compression.FileSystem

Question

The following example is retraceable on the internet and on this website as a sollution to compress files using the .NET Framework 4.5 It works, but when the archive already exi

Answer 1

Noam's answer and Jurjen:

[Reflection.Assembly]::LoadWithPartialName( "System.IO.Compression.FileSystem" )
$src_folder = "D:\stuff\" 
$destfile = "D:\stuff.zip"
$destfile2=[System.IO.Compression.ZipFile]::Open($destfile, "Update")
$compressionLevel = [System.IO.Compression.CompressionLevel]::Optimal
$in = Get-ChildItem $src_folder -Recurse | where {!$_.PsisContainer}| select -expand fullName
[array]$files = $in
ForEach ($file In $files) 
{
        $file2 = $file #whatever you want to call it in the zip
        $null = [System.IO.Compression.ZipFileExtensions]::CreateEntryFromFile($destfile2,$file,$file2,$compressionlevel)
}
$archiver.Dispose()