title: int array to string
body: <p>In C#, I have an array of ints, containing digits only. I want to convert this array to string.</p>
  
  <p>Array example: </p>
  
  <pre><code>int[] arr = {0,1,2,3,0,1};
  </code></pre>
  
  <p>How can I convert this to a string formatted as: <code>"012301"</code>?</p>