Handling Zip Files Without Third Party Lib in .NET 4.0?
.net, c#, zip
Solution
Not for 4.0, but a `ZipArchive` class is being considered for the next version. You can find details about this on the BCL Team blog.
Edit: Otherwise, assuming that it's still available, and depending on your definition of built in (at least it comes/came with Visual Studio), you might be able to use the J# classes to zip files as described in this article: Using the Zip Classes in the J# Class Libraries to Compress Files and Data with C#
Edit2: Though note the comments below, that the J# option is probably not the right option except in certain unusual circumstances.
Problem
There is a similar question for 3.5 here: Is there a built-in zip library in .NET 3.5? that speculated that 4.0 would have it, but I can't find any info about it. If not, does anyone know why not? Seems like it would be fairly high on the list of things to include support for.