Time to continue with WPF.

You don't need to use XAML to program WPF. Quite the contrary. Everything you can do with XAML you can do with C#. It's just a matter of using the right tool for the right job. It doesn't make much sense to do all the layout code in C#, XAML will hopefully do a better job there. Anyway, just to prove the point I have to start where every new technology starts: Hello World!

I've installed all the necessary tools. I've started VS2005 and created a new WinFx application.
The application by default holds references to all relevant assemblies, these being:
- PresentationCode
- PresentationFramework
- ReachFramework
- UIAutomationProvider
- UIAutomationTypes
- WindowsBase

The names of these assemblies don't look very RTM-like, so I have to assume they'll change in one of the upcoming CTP's or RTM.

I like to start as clean as possible, so I throw out all the stuff under the properties folder and also the default created MyApp.xaml and Class1.xaml.

Now add a new class called HelloWorld:

using System;
using System.Windows;  //This is the WPF namespace

namespace HelloWorld
{
    public class HelloWorld
    {
        [STAThread]
        public static void Main()
        {
            // This is the System.Windows.MessageBox
            MessageBox.Show("Hello SDN!");            
        }
    }
}

Startup the application and go!