title: Set password on Zip file using DotNetZip
body: <p>I'm using <a href="https://www.nuget.org/packages/DotNetZip/" rel="noreferrer">DotNetZip</a> to zip my files, but I need to set a password in zip.</p>
  
  <p>I tryed:</p>
  
  <pre><code>public void Zip(string path, string outputPath)
      {
          using (ZipFile zip = new ZipFile())
          {
              zip.AddDirectory(path);
              zip.Password = "password";
              zip.Save(outputPath);
          }
      }
  </code></pre>
  
  <p>But the output zip not have password.</p>
  
  <p>The parameter <code>path</code>has a subfolder for exemple:
  <code>path = c:\path\</code>
  and inside path I have <code>subfolder</code></p>
  
  <p>What is wrong?</p>