title: Add number to the ending of a numerical date value in C#
body: <p>I'm trying to store an ID with the Date (month/day/year) in the same integer value in C#.</p>
  
  <p>This way I can check whether a specific Id was already voted on in a particular day and prevent double voting in the same day. I store the votes in a static variable.</p>
  
  <p>I convert the date to long using this code:</p>
  
  <pre><code>long.Parse(DateTime.Now.ToString("yyyyMMdd"));
  </code></pre>
  
  <p>So for today (2/9/2015) I get: <code>20150209</code></p>
  
  <p>Now my IDs are integers. I want to append those to the converted date number.</p>
  
  <p>So if for example the ID is 138, I want to add 138 to the end of the number, so the end result would be: <code>20150209138</code>.</p>
  
  <p>How can I append the id to the converted numerical date like I've explained above?</p>