title: Display a message in Visual Studio's output window when not debug mode?
body: <p>In Java, you can use <code>System.out.println(message)</code> to print a message to the output window.</p>
  
  <p>What's the equivalent in Visual Studio ?</p>
  
  <p>I know when I'm in debug mode I can use this to see the message in the output window:</p>
  
  <pre><code>Debug.WriteLine("Debug : User_Id = "+Session["User_Id"]);
  System.Diagnostics.Trace.WriteLine("Debug : User_Id = "+Session["User_Id"]);
  </code></pre>
  
  <p>How can this be done without debugging in Visual Studio?</p>