title: AppDomain.CurrentDomain.GetData("DataDirectory") always returns Null
body: <p>In my program, I need to copy a template database from the default location, which I understand will be different depending on the installer I choose to use. The problem is that I can't seem to read the actual path of |DataDirectory| I understand that I should use AppDomain.CurrentDomain.GetData("DataDirectory") but it always returns Null in debugger which means I can't test my code. I've tried the following two syntaxes:</p>
  
  <pre><code>string sourcePath = AppDomain.CurrentDomain.GetData("DataDirectory").ToString();
  </code></pre>
  
  <p>and</p>
  
  <pre><code>string defaultpath = Convert.ToString(AppDomain.CurrentDomain.GetData("DataDirectory"));
  </code></pre>
  
  <p>Am I doing something wrong?</p>
  
  <p>ThanX!</p>