I have downloaded and installed DNN Community Edition 5.06.01.  I have downloaded the DNN API help file, and have Visual Studio 2010.  I'd like to write a simple c# console app that fetches the portal name for a given portal GUID.  I've Googled and tried to find any examples of how to use the API, but have found nothing. Here's the place I'm starting from, but it won't work because this app has no way to know what DNN instance to interact with, and I can't see how to do it in the API.  Can anyone help me to get to the next steps?  Here's my starter code:

using System;

using DotNetNuke.Entities.Portals;

namespace DNNSandbox

{

    class Program

    {

        static void Main(string[] args)

        {

            try

            {

                PortalController myPortalController = new PortalController();

                PortalInfo myPortalInfo = new PortalInfo();

                string myPortalName = string.Empty;

                try

                {

                    myPortalInfo = myPortalController.GetPortal(new Guid("5319BECE-FEE1-48E3-AD7A-4A8323515E39"));

                    myPortalName = myPortalInfo.PortalName;

                }

                catch (System.NullReferenceException)

                {

                    myPortalName = "unknown";

                }

                Console.Out.Write("myPortalName is: " + myPortalName);

                Console.In.ReadLine();

            }

            catch (Exception ex)

            {

                Console.Out.Write(ex.ToString());

                Console.In.ReadLine();

            }

        }

    }

}