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

In .net 4.0 Deflate and GZip cannot handle Zip files, but you can use shell function for Unzipping files.

public FolderItems Extract()
{
 var shell = new Shell();
 var sf = shell.NameSpace(_zipFile.Path);
 return sf.Items();
}

When extract Function is called you can save the returned folderItems by

    FolderItems Fits = Extract();
    foreach( var s in Fits)
    {
       shell.Namespace("TargetFolder").copyhere(s); 

    }