Problem with extract files in c#

Hello , i´m trying to extract all contents of a .jar files with CsharpZipLib

This is my code:

string appdata = System.Environment.GetFolderPath(System.Environment.SpecialFolder.ApplicationData);

string subFolderPath = System.IO.Path.Combine(appdata, ".minecraft");

string bin = System.IO.Path.Combine(subFolderPath, "bin");

string mc = System.IO.Path.Combine(bin, "minecraft.jar");

string test = System.IO.Path.Combine(subFolderPath, "aa");

using (ZipFile zip = ZipFile.Read(mc))

{

foreach (ZipEntry e in zip)

{

e.Extract(test);

When I execute the project only extract some folders, not all, I want to extract all folders and files in the .jar

Thanks