title: Add Column to CSV Windows PowerShell
body: <p>I have a fairly standard csv file with headers I want to add a new column &amp; set all the rows to the same data.</p>
  
  <h2>Original:</h2>
  
  <pre><code>column1, column2
  1,b
  2,c
  3,5
  </code></pre>
  
  <h2>After</h2>
  
  <pre><code>column1, column2, column3
  1,b, setvalue
  2,c, setvalue
  3,5, setvalue
  </code></pre>
  
  <p>I can't find anything on this if anybody could point me in the right direction that would be great. Sorry very new to Power Shell.</p>