How to unzip files to folder in C#

Question

I'am trying to unzip files from .zip file in C# (Forms App) I got something like this:

System.IO.Compression.ZipFile.ExtractToDirectory(zipPath, extractPath);

i have strings zip and extract Path but i have an error "CS0234". My libraries:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Media;
using System.IO.Compression;
using System.IO;

Any ideas?

Do you have a reference to the System.IO.Compression.FileSystem assembly? Read the remarks. — dr.null
If you already have using System.IO.Compression you don't need to add it in front of the rest. It should just be "ZipFile.ExtractToDirectory(zipPath, extractPath);" — Sarah Cox
Then it's most likely what @dr.null suggested. Expand the references in your project and see if System.IO.Compression.FileSystem is there — Sarah Cox

David Tansey David Tansey · Accepted Answer · 2021-03-12T22:53:12

The following doc confirms what has been suggested in the comments, when it says the following:

The following examples show some of the operations you can perform with compressed files. These examples require the following NuGet packages to be added to your project:

System.IO.Compression

System.IO.Compression.ZipFile

If you're using .NET Framework, add references to these two libraries to your project:

System.IO.Compression

System.IO.Compression.FileSystem

You need to add an assembly reference to System.IO.Compression.FileSystem.

How to unzip files to folder in C#

3 Answers