The following question\'s answer seems to outline how to extract files using the System.IO.Commpression.ZipFile.ExtractToDirectory method invocation. \"ZipFile\" doesn\'t s
You will need to add a reference to the System.IO.Compression.FileSystem assembly.
System.IO.Compression.FileSystem
Every library class has an MSDN page. This is the one for ZipFile.
Notice the specification of the namespace and the assembly in the top section.