title: How does select formula in C# work using reports
body: <p>I would like to ask a question about the following function related to reports in C#.</p>
  
  <pre><code>crystalReportViewer1.SelectionFormula = "{Cars.CarCode} = " + CarCode;
  </code></pre>
  
  <p>Does this formula add a filter condition to the current query code that is used in the report, or does it create a whole new query?</p>
  
  <p>If not is there an other method of further filtering a report?</p>