title: How do I use CASE WHEN in DataColumn.Expression?
body: <p>I have a table with 1 column: 'Status' I want to add in another column named 'Action', its value will be as follow:</p>
  
  <pre>
  If column Status = '0' Then Action = 'Start', 
  If column Status = '1' Then Action = 'Ready', 
  If column Status = '2' Then Action = 'Go',
  </pre>
  
  <p>How do I add a column with Expression like that?</p>
  
  <p>I tried following but it doesn't work:</p>
  
  <pre><code> myDataTable.Columns.Add("Action", "CASE (WHEN [Status] = '0') THEN "Start")
  </code></pre>