title: How to zip all files in folder
body: <p>I have a folder <code>"D:\folder"</code> and in this folder I have 10 files that I need to zip into a new archive <code>"D:\folder.zip"</code>.</p>
  
  <p>Currently I'm using <strong>ICSharpCode.SharpZipLib</strong> but this is not a mandatory requirement, so other solutions are acceptable.</p>
  
  <p>The problem I'm facing is that when I try to execute the method <code>FileStream fs = File.OpenRead(@"D:\folder")</code> I get an error because of access to the specifided path.</p>
  
  <p>How can I zip these files in a simple way?</p>