System.IO.Packaging

Question

I have my project set to .NET Framework 4.0. When I add System.IO.Packaging, it says that it doesn\'t exist. It also doesn\'t show up when I try to add it as a

Answer 1

System.IO.Packaging is a namespace, not a reference. Most (all?) of the classes within the namespace, such as ZipPackage, are deployed in WindowsBase.dll.

Make sure you have a reference to WindowsBase.dll - if you do, you can just add: using System.IO.Packaging; to your .cs files, and you'll be fine.

Note that you can see this in the documentation for any class on MSDN. For example, in ZipPackage, it lists:

Namespace:  System.IO.Packaging
Assembly:  WindowsBase (in WindowsBase.dll)

Answer 2

System.IO.Packaging v4.0.30319 is in WindowsBase.dll v4.0.30319

For windows 10 maybe you could found here

C:\Windows\Microsoft.NET\assembly\GAC_MSIL\WindowsBase\v4.0_4.0.0.0__31bf3856ad364e35\