title: Displaying Error Message from C# AfterInstall Event
body: <p>Can someone please tell me how to display error message in C# during execution of AfterInstallEvent?</p>
  
  <p>My project uses the Microsoft set-up and deployment project and then I have created a class that is called when the AfterInstall event is fired.  </p>
  
  <p>MessageBox.Show(); doesn't work..."The name 'MessageBox' does not appear in the current context".  </p>
  
  <p>If it was that simple, I wouldn't be asking!?</p>