Add WPF, WinForms, Mac nodes to samples

From slack discussion with @charlesroddie and @mydogisbox

The pre-release of Xamarin.WPF is just out. It seems to be usable with glitches here or there as you would expect. It has all the stock controls in Xamarin.Forms. There is almost no support in 3rd party controls at the moment. (edited)

Let’s add a sample under https://github.com/fsprojects/Elmish.XamarinForms/tree/master/Samples/CounterApp

I’d like to also see WinForms and Mac nodes under there.

Here’s a sample from @mydogisbox:

type CounterApp () as app = 

    inherit Application ()
    let program = Program.mkProgram App.init App.update App.view
    let runner = 
        program
        |> Program.withConsoleTrace
        |> Program.withDynamicView app
        |> Program.run
 

type MainWindow() as this =
    inherit FormsApplicationPage()

    do Forms.Init()
    do this.LoadApplication(new CounterApp())


[<STAThread>] 
[<EntryPoint>]
do (new System.Windows.Application()).Run(MainWindow()) |> ignore

[bugQ]

Thanks for the encouragement and instructions, @charlesroddie. After referencing sample Xamarin.UWP projects and figuring out that there was one missing step (changing the class of the <Page> element to <forms:WindowsPage>), I was able to get something working, although it occasionally throws an exception on the Xamarin.Forms.Forms.Init(e); line, saying “More data is available.” It sounds like this is a Xamarin.UWP bug, probably a failure to loop and read all available data somewhere. I’ll track that down and perhaps file a report later, but it doesn’t seem to have anything to do with this project.

So, basically, everything is set for UWP, too, at least for local testing. I’ll submit a PR shortly.

[charlesroddie]

Please add that @bugQ . Getting this running is easy, except release to store which is in testing.

You can add a UWP project, min Windows version FCU. Put xmlns:forms="using:Xamarin.Forms.Platform.UWP" inside <Page> tags in MainPage.xaml. Put Xamarin.Forms.Forms.Init(e); after the rootFrame instructions in App.xaml.cs. Installing the relevant nuget packages. Put LoadApplication(new AppName.App()); after this.InitializeComponent(); in MainPage.xaml.cs, after adding the appropriate project reference.

You can also copy over from a C# Xamarin.Forms template if you prefer.

You can then run in debug mode, and test in release mode using the instructions in the thread you linked.

You’ll need to do this for each of the samples.