Hello Romuald,

Thank you for the provided information. 

As this feature request is related to Xamarin.Forms and WPF. The WPF requires running on Windows, even if you're using .NET Core 3.1, .NET 5 or .NET 6 as the framework. There is no direct option to take a WPF UI and use it on MacOS.

Cross-Platform Framework

If you're looking for cross platform UI, then you might want to consider the upcoming .NET MAUI(the evolution of Xamarin) framework. As the app will target Windows and macOS the .NET MAUI(multi-platform app UI) supports these platforms. The .NET MAUI apps run on Android, iOS, Windows and macOS. Currently .NET MAUI is in a preview stage. 

Migrate Xamarin.Forms apps to .NET MAUI - Based on the Microsoft documentation you can migrate the current Xamarin.Forms applications to .NET MAUI.

Telerik UI for .NET MAUI

We are currently focusing our efforts on .NET MAUI, with our latest announcement, Telerik UI for MAUI. You can download the Telerik UI for .NET MAUI and review all controls we currently have.  

Helpful links

 - Telerik UI for .NET MAUI documentation

 - How to Get started with Telerik UI for .NET MAUI

Telerik .NET MAUI Sample Apps

We have two demo applications developed with Telerik UI for .NET MAUI controls:

- SdkBrowser MAUI application which showcases the available library controls.

- Crypto Tracker demo app - a real-case crypto application that shows changes in cryptocurrency prices.

Requesting Features and Controls

If you have a request for a certain control or want some feature in the available controls you can submit a feature request using the Telerik UI for .NET MAUI feedback portal. If you have any questions on UI for .NET MAUI, you can submit them in the Telerik UI for .NET MAUI Forum.

Additional information - Could you please share with us what controls you want to use in your cross-platform application?

I am looking forward to your reply.

Regards,
Didi
Progress Telerik

Hello Olivier,

Thank you for providing additional feedback, it has been added to the feature request internally.

AdHoc

Before I close this, I wanted to quickly address your requirement of AdHoc distribution. This is fully supported by UWP, and is really easy to enable, just set the UapAppxPackageBuildMode flag to "SideLoad" instead of "StoreUpload". This will provide you with an appx/msix that a user can just double-click to install on their PC.

In fact, just by setting GenerateAppInstallerFile=True, you can get a index.html with an .installer file that you can stick on any file share or blob to essentially get your own private app Store page that will provide automatic updates to side-loaded apps.

In Visual Studio

This is now built into the Visual Studio tools when you package the app, you can set the properties before building the package, everything is provided to you.

In the Publish menu, select Create app Packages...

Then choose "Sideloading":

For example, here's a screenshot of one of my internally distributed applications, being hosted on a simple blob container... no web server needed.

In CI/CD

If you're using a DevOps pipeline instead, take a look at my full Xamarin.Forms 4-job build pipeline (the UWP build is on line 275-287). 

The difference between that one and a sideloadable version is the following msbuild args

/p:AppxBundlePlatforms="x86|arm" 
/p:UapAppxPackageBuildMode=SideLoad 
/p:AppxPackageDir="$(Build.ArtifactStagingDirectory)\AppxPackages\\" 
/p:AppxAutoIncrementPackageRevision=False 
/p:PackageCertificateKeyFile="pathtopfx" 
/p:PackageCertificatePassword="pfxPassword" 
/p:PackageCertificateThumbprint="pfxThumbprint" 
/p:AppxPackageSigningEnabled=True 
/p:AppxBundle=Always 
/p:GenerateAppInstallerFile=True
/p:AppInstallerUri="https://fileshareorwebpageyouwant.com/index.html" 
/p:HoursBetweenUpdateChecks=24

• If you want a sideloadable MSIX file with an auto-update/distribution web page, you would use the yellow highlighted values.
• If you want to enable auto-update checks by the user's installed app, set the orange highlight values

UWP AdHoc Info & Tutorials

Here's more info:

• https://docs.microsoft.com/en-us/windows/uwp/publish/distribute-lob-apps-to-enterprises 
• Tutorial on automatic update and distribution from a web app https://docs.microsoft.com/en-us/windows/msix/app-installer/installing-windows10-apps-web (notice other options in the left column) 

Note - If you have users on Windows 7 this of course is not an option. Windows 7 has reached EoL and is no longer supported by Microsoft (except in rare, extended support cases).

Regards,
Lance | Team Lead - US DevTools Support
Progress Telerik

Hi Francisco,

Thank you for sending the details on your user case. 

At the moment I have nothing new to share regarding WPF support, please follow the feedback item to receive an email notification as soon as there is any update.

Regards,
Yana
Progress Telerik

Hi Jeremy,

Thank you for your input. We're having it in mind.

Thanks for raising this topic Luiz. 

Xamarin.Forms support for WPF is still in preview actually, and far from official at this point. We are looking into this to see how it will develop. We will keep this item open in order to track demand for it.