.NET 8.0 and VS 17.8 Stable support

[jeromelaban]

.NET 8.0.100 and VS 17.8 has now been released, and we're working to get everything up and running for the Uno Platform community.

Visual Studio support

At present time, there are no known issues when installing and using VS 17.8.

.NET SDK

Upgrading uno.check to 1.17.0 allows for .NET 8.0.100 and its workloads to be installed properly, on all platforms.

The .NET 8.0.100 SDK is having a layout issue with dotnet/sdk#36884 which contains RC2 workload manifests and fails to install properly with uno.check (unoplatform/uno.check#197). We're currently tracking the updates that will be posted by the .NET team so we can update everything and get everyone running.

Until this issue is resolved, installing VS 17.8 installs the 8.0.100 mobile workloads properly and if you're not running uno-check on Windows, you will be good to code. On macOS, until this is resolved, we do not have a workaround. Linux does not use workloads so installing .NET 8.0.100 manually will be enough to use VS Code and build wasm/gtk based apps.

[jeromelaban]

A new version of uno.check is now available for .NET 8.0.100, happy coding!

[TopperDEL]

Thank you @limeniye! Adding the three lines to my "shared" project (the UnoApp34 in your screen above) did the trick. I'm not quite sure why I need it there. But I use a quite complex logic with Skia and other packages. But now my app is running with .Net 8! Thank you!

[limeniye]

@TopperDEL, hm. I'am very glad to help you. But I guess this is not quite correct.
Please, tell me what do you have at the end of Directory.Build.props file?
Do you have this condition?

    <When Condition="$(TargetFramework.Contains('windows10'))">
      <PropertyGroup>
        <IsWinAppSdk>true</IsWinAppSdk>
        <SupportedOSPlatformVersion>10.0.18362.0</SupportedOSPlatformVersion>
        <TargetPlatformMinVersion>10.0.18362.0</TargetPlatformMinVersion>
        <RuntimeIdentifiers>win-x86;win-x64;win-arm64</RuntimeIdentifiers>
        <EnableCoreMrtTooling Condition=" '$(BuildingInsideVisualStudio)' != 'true' ">false</EnableCoreMrtTooling>
      </PropertyGroup>
    </When>

[TopperDEL]

I have this one:

<When Condition="$(TargetFramework.Contains('windows10'))">
      <PropertyGroup>
        <IsWinAppSdk>true</IsWinAppSdk>
        <SupportedOSPlatformVersion>10.0.19041.0</SupportedOSPlatformVersion>
        <TargetPlatformMinVersion>10.0.19041.0</TargetPlatformMinVersion>
      </PropertyGroup>
    </When>

I will compare it with a working version from a fresh Uno-Net8-app.

[limeniye]

@TopperDEL, understood.

Adding the three lines to my "shared" project (the UnoApp34 in your screen above) did the trick

• Remove this lines from the shared uno lib (UnoApp34) and add this three lines to the Windows project:
  
• Add the <RuntimeIdentifiers>win-x86;win-x64;win-arm64</RuntimeIdentifiers> to the your "$(TargetFramework.Contains('windows10'))" condition. This should work.

Otherwise, if you added this to your shared uno lib without specifying that these lines should only be used for the WinUI project, this can cause problems at other projects.

[TopperDEL]

It's working, now. Thanks!