title: When using table parameters in LoadRunner, how do I select values from individual columns?
body: <p>In LoadRunner, given a parameter table stored in a file <code>MyTable.dat</code> and a VUGEN script written in C#:</p>
  
  <pre><code>FirstHeader,SecondHeader,ThirdHeader
  1A,1B,1C
  2A,2B,2C
  3A,3B,3C
  </code></pre>
  
  <p>I can use <code>lr.eval_string("{MyTable}");</code> to return a whole row:</p>
  
  <pre><code>1A,1B,1C
  </code></pre>
  
  <p>I can use <code>lr.next_row("MyTable.dat");</code> to advance to the next row</p>
  
  <pre><code>2A,2B,2C
  </code></pre>
  
  <p>However, it's not clear how to select an individual column.</p>
  
  <p>The function reference for scripts written in C states that you can use <code>lr_paramarr_idx</code> for parameter arrays - but that doesn't appear to be available in C# &amp; it doesn't make clear if a table row counts as a parameter array.</p>
  
  <p>HP VUGen version 9.52.0.0.</p>