Why isn't my Gui showing up at all?

I am following a tutorial, and the guy has his GUI showing up but mine is not showing up when I start the game.

 public void OnGui()
 {
     if (!connected)
     {
         connectionIP = GUILayout.TextField(connectionIP);
         int.TryParse(GUILayout.TextField(portNumber.ToString()), out portNumber);

         if (GUILayout.Button("Connect"))
         {
             Network.Connect(connectionIP, portNumber);
         }
         if (GUILayout.Button("Host"))
         {
             Network.InitializeServer(4, portNumber, true);
         }
     }
     else 
     {
         GUILayout.Label("Connections: " + Network.connections.Length.ToString());
     }
 }
 

}