title: How to get the msi path within installerclass in C#
body: <p>I would like to know the path where the <code>msi</code> is located whithin the <code>InstallerClass</code> that I use as a custom action in the setup.</p>
  
  <p>I tried using properties like <code>path</code>, <code>SrcDir</code> etc. in <code>Context.Parameters</code>, but those values do not exsist (Throws <code>NullReferenceException</code>). Is there any other way way of getting that path or any reason why those values are null???</p>
  
  <p>Thanks</p>