C# example doesn't compile

[MendyBerger]

The C# example uses IOperations, but IOperations isn't defined or imported anywhere.

[MendyBerger]

dotnet build fails with the following error:

Restore complete (0.6s)
  dotnet_counter failed with 1 error(s) (0.3s)
    [path]/Class1.cs(4,33): error CS0246: The type or namespace name 'IOperations' could not be found (are you missing a using directive or an assembly reference?)

Build failed with 1 error(s) in 1.1s

[vados-cosmonic]

Hey @MendyBerger this isn't still the case right? I believe I fixed this on the last go-through (IOperations is no longer there). Code looks like this now:

namespace AdderWorld;

public class AdderWorldImpl : IAdderWorld
{
    public static uint Add(uint x, uint y)
    {
        return x + y;
    }
}

[MendyBerger]

Thanks @vados-cosmonic! That issue seems fixed.

Okay, now I'm running into a different error when following the docs.

dotnet build fails with the following error:

/usr/lib/dotnet/sdk/9.0.105/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.TargetFrameworkInference.targets(166,5): error NETSDK1045: The current .NET SDK does not support targeting .NET 10.0.  Either target .NET 9.0 or lower, or use a version of the .NET SDK that supports .NET 10.0. Download the .NET SDK from https://aka.ms/dotnet/download

Restore failed with 1 error(s) in 0.3s

So looks like it wants .NET 10 which is not fully released yet, and I gave up on installing it after 30 minutes of trying...
(BTW would it be possible to stick with released versions of .NET? Previously, .NET 9 was required, but now v9 is released, we just moved to the next per-release?)

When changing to <TargetFramework>net9.0</TargetFramework> I get the following error:

Restore complete (0.4s)
  adder failed with 1 error(s) (0.2s)
    [path]/adder/Component.cs(3,31): error CS0246: The type or namespace name 'IAdderWorld' could not be found (are you missing a using directive or an assembly reference?)

Build failed with 1 error(s) in 0.9s

[vados-cosmonic]

Ah, so I'm definitely not the C# expert but I think C# support is actually not available for anything other than the version cited -- c3db27e

I'm not sure this has changed... You're going to have to get .NET 10 installed... I wonder if it could be containerized to make it easier

[MendyBerger]

Maybe the .net gurus can help me here.
Is there any way to install that .net10 on Ubuntu? I can't find a way to do that

[vados-cosmonic]

Ah note that I was able to get it installed on daily driver arch setup (I think I last touched the C# docs and set it up)! What part of the instructions did you have problems with? What error did you see?

[MendyBerger]

🤦 I was using https://learn.microsoft.com/en-us/dotnet/core/tools/dotnet-install-script instead of https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/sdk-10.0.100-preview.3-linux-x64-binaries

(still needed to uninstall .net9 first, but then it installed correctly)

Ran into one issue
public class AdderWorldImpl : IAdderWorld
Should be
public class AddImpl : IAdderWorld
But with that change, it compiles successfully!!!

Thanks for the help!