title: I have to take the directory of a file in zip file
body: <p>Can someone helps me out with my problem.
  I have to take a file's directory in zip file so i can calculate its MD5 hash (without unzip it). I am using <code>DotNetZip</code> Library but i can't find the solution of the problem. I'll show you what i've tryed and hope you will help as fast as possible.
  Thanks!</p>
  
  <pre><code>if (ofd.ShowDialog() == DialogResult.OK) 
  {
      using (ZipFile zip = ZipFile.Read(ofd.FileName))
      {
          foreach (ZipEntry f in zip)
          {
              GetMD5HashFromFile(ofd.FileName+"\\"+f.FileName);
          }
      }
  }
  </code></pre>