This functionality is not implemented in the portable version of this assembly when using Microsoft.Maui.Essentials

[Hunv]

Hello,

I like to be able to copy things to the clipboard and to use the OS "share"-feature to share content of my app via 3rd party apps (Messengers, Mails, whatever). I am creating my app for all OSes (right now for Windows and Android).
I tried using the Share and Clipboard classes of Microsoft.Maui.Essentials which works on Android. But on Windows I get the following unhandled exception message when trying to use the classes. The app is compling and starting.

Microsoft.Maui.ApplicationModel.NotImplementedInReferenceAssemblyException: 'This functionality is not implemented in the portable version of this assembly. You should reference the NuGet package from your main application project in order to reference the platform-specific implementation.'

The code is just as simple as

using Microsoft.Maui.ApplicationModel.DataTransfer;

namespace HNS.Avalonia.Platforms.Windows
{
    public class WindowsClipboardService : IClipboardService
    {
        public void SetText(string text)
        {
            Clipboard.SetTextAsync(text);
        }
    }
}

All Versions are up-to-date in all Projects:
DotNet 9
Avalonia 11.2.6
Microsoft.Maui.Essentials 9.0.50

Actually I don't understand why it is not running - especially because it does on Android.

[timunie]

What's wrong with Avalonias Clipboard service for Windows? You may need to have different code pathes per platform here.

[Hunv]

Oh, I was not aware that this exists. But I have the same issue with the Share class to use the Share-function of the operating system to share (in my case) a text with other apps like WhatsApp, Mailclients etc.

[maxkatz6]

MAUI Essentials doesn't support Windows without using "net8.0-windows10.0.xxxxx" target framework. So you have to set higher target version.

[Hunv]

When I choose Windows at target OS and set the latest version at Target OS version in the Properties of the Desktop App in Visual Studio, I get for example The specified RuntimeIdentifier 'win10-arm' is not recognized. See https://aka.ms/netsdk1083 for more information. but also for all other platforms.

In the project file is now stated <TargetFramework>net9.0-windows10.0.26100.0</TargetFramework> instead of just net9.0.
As the error message references to a file from .Net Framework SDK (see File column), I think have no control what is handed over to the compiler? At least I cannot find any field in my project called RuntimeIdentifier.

[Hunv]

I played around with the parameters and the mentioned missing RuntimesIdentifiers are no problem, if I set Target OS Version and Supported OS version to maximum 10.0.18362.0. Everything higher than that will result in the errors mentioned above.

The link in the message leads to https://learn.microsoft.com/en-us/dotnet/core/compatibility/sdk/8.0/rid-graph, which is not helpful I think. The link is talking about replacing win10-x64 with win-x64. But Avalonia has a complete different value (net9.0 and optionally some suffixes for the OSes).