How to Unzip all .Zip file from Folder using C# 4.0 and without using any OpenSource Dll?

Question

I have a folder containing .ZIP files. Now, I want to Extract the ZIP Files to specific folders using C#, but without using any external assembly or the .Ne

Answer 1

ZipPackage might be a place to start. It's inside System.IO.Packaging and available in .NET 4.0

Not anywhere near the simplicity of the .NET 4.5 method mentioned above, but it looks like it can do what you want.