Unzip using Windowsbase dll

public void UnZip(string pathToZipFile, string destinationPath)
{
    try
    {
        using (Package package = ZipPackage.Open(pathToZipFile, FileMode.Open, FileAccess.Read))
        {
            foreach (PackagePart part in package.GetParts())
            {
                var target = Path.GetFullPath(Path.Combine(destinationPath, part.Uri.OriginalString.TrimStart('/')));
                var targetDir = target.Remove(target.LastIndexOf('\\'));

                if (!Directory.Exists(targetDir))
                    Directory.CreateDirectory(targetDir);

                using (Stream source = part.GetStream(FileMode.Open, FileAccess.Read))
                {
                    source.CopyTo(File.OpenWrite(target));
                }
            }
        }
    }
    catch (Exception ex)
    {
        throw new Exception(ex.Message + " (Event: UnZip)");
    }
}