title: How to use a date constant for a BQL query filter
body: <p>I'm trying to get a recordset via a BQL query, but I can't figure out how to create a constant for a date.  I'd like to filter based on a hard date value - but I see no examples anywhere for a date constant.  I tried using a string constant with the date value, but that did not work, and if I try to use a DateTime as such:</p>
  
  <pre><code>public const DateTime TranDate = Convert.ToDateTime("2017-04-01");
  
  public class tranDate : Constant&lt;DateTime&gt;
  {
      public tranDate() : base(TranDate) { }
  }
  </code></pre>
  
  <p>I get an error - "cannot declare instance members in a static class".</p>
  
  <p>I'm at a loss on this one...</p>