Extracting Zip File in Visual Basic .NET - vb.net

Question

I am working on a Visual Basic Project and i am getting stuck on something super simple. Unzipping a file.
I have the following imports
`Imports System.Net
Imports System
Imports System.IO
Imports System.IO.Compression`
My References are as follows
System
System.Core
System.Data
System.Data.DataSetExtensions
System.Deployment
System.Drawing
System.IO.Compression
System.IO.Compression.FileSystem
System.Net.Http
System.Windows.Forms
System.Xml
System.Xml.Linq
So what my code should be doing is checking if a software is installed,
if it is not it will download a zip file with the installed.
once the zip is downloaded it should extract it and run the setup.
Everything is working except this code block right here:
Private Sub client_OMSADownloadCompleted(ByVal sender As Object, ByVal e As System.ComponentModel.AsyncCompletedEventArgs)
MessageBox.Show("Download Complete")
Try
ZipFile.ExtractToDirectory("C:\end.zip", "C:\end")
Catch ex As Exception
MsgBox("Can't Extract file" & vbCrLf & ex.Message)
End Try
End Sub
Public NotInheritable Class ZipFile
Public Shared Sub ExtractToDirectory(
sourceArchiveFileName As String,
destinationDirectoryName As String
)
End Sub
End Class
I get no exceptions, it just doesn't unzip, it basically skips right over the block.
Please help!

Answer 1

According your code, you have inherit the method ExtractToDirectory of ZipFile class that do nothing.
Public NotInheritable Class ZipFile
Public Shared Sub ExtractToDirectory(sourceArchiveFileName As String,
destinationDirectoryName As String)
End Sub
End Class
To solve this issue, simple delete this method from your code.

Answer 2

You're declaring ZipFile class yourself, while you should use existing one from System.IO.Compression namespace. So, just remove following part of your code:
Public NotInheritable Class ZipFile
Public Shared Sub ExtractToDirectory(
sourceArchiveFileName As String,
destinationDirectoryName As String
)
End Sub
End Class
...and everything should work as expected.