title: Array, Arraylist or list of lists?
body: <p>I was going to use a standard array, I need it to x number of rows and be 2 columns </p>
  
  <pre><code>double[,] members = new double[x, 2];
  </code></pre>
  
  <p>and loop through all the results I get back and then add them to the array, but as the number of results can change I don't want to pre-define the size of the array...</p>
  
  <pre><code>members[0, 0] = cost;
  members[x, 1] = tax;
  x++;
  </code></pre>
  
  <p>I was looking at resizing the array but would it be easier just using an arraylist or list of lists for this?</p>