title: In Powershell, how do I concatenate one property of an array of objects into a string?
body: <p>For example, I have 3 files in c:\z</p>
  
  <pre><code>PS C:\z&gt; dir | select name
  
  Name
  ----
  a.png
  b.png
  c.png
  </code></pre>
  
  <p>What I want is a string.</p>
  
  <blockquote>
    <p>a.png,b.png,c.png</p>
  </blockquote>
  
  <p>Thanks.</p>