Couldn't find any assemblies on NuGet package CefSharp.Common.NETCore in both 99.2.140 and 100.0.140

[kekyo]

I tried to write a small verification code using the .NET Core version of CefSharp, but could not find any symbols in the CefSharp initialization code. It is the following startup code, which builds fine with net48 instead netcoreapp3.1.

var settings = new CefSettings();
Cef.Initialize(settings, performDependencyCheck: true, browserProcessHandler: null);

I checked inside the package and I can't find the lib directory, so I assume the problem is related to packaging.

• NuGet package explorer in .NET Core 100.0.140
• NuGet package explorer in .NET Framework 100.0.140

Thanks for a very good project.

[amaitland]

Firstly please use discussions to ask questions.

but could not find any symbols in the CefSharp initialization code.

What do you mean by this?

What exactly are you trying to achieve?

[kekyo]

What do you mean by this?

I wanted to do a quick run through of AnyCPU support in CefSharp (.NET Core version), so I referred to #1714 (comment) I tried to insert the code:

• If the TargetFramework is net48 and the package is CefSharp.Wpf, it builds and works OK.
• If the TargetFramework is netcoreapp3.1 and the package is CefSharp.Wpf.NETCore, I get a C# compiler error that the CefSettings and Cef symbols are missing.

So I looked for where these symbols are defined in the CefSharp.Wpf package and found them in the CefSharp.Common package. But in CefSharp.Common.NETCore package is not included.

You can see it in the attached NuGet package explorer link.

[amaitland]

There are details about how it's packaged in #2796 a runtimes folder is used. .Net core is packaged differently. AnyCPU is only meant for libraries for .net core.

If you wish to support. Net Core and .Net 4.8 the you need to conditionally add the packages. There's an example you can use at https://github.com/cefsharp/CefSharp.Wpf.HwndHost/blob/master/CefSharp.Wpf.HwndHost/CefSharp.Wpf.HwndHost.csproj#L25

There is a generic working example at https://github.com/cefsharp/CefSharp.MinimalExample

[kekyo]

Not knowing if the problem is not shared or if my understanding is incorrect, I created a very small WPF application.

The project is multi-built using TargetFrameworks so that it can build both net48 and netcoreapp3.1. Naturally, since the packages to be referenced are different, I have written them to change with Condition.

https://github.com/kekyo/CefSharpNETCoreTest/blob/main/CefSharpNETCoreTest/CefSharpNETCoreTest.csproj

If TargetFrameworks is set to only net48 in this way, the build will succeed, but if netcoreapp3.1 or both are set, the above mentioned compilation error will occur.

Couldn't it maybe be possible to use CefSharp to build this way?

[kekyo]

Enabled netcoreapp3.1:

Rebuild started...
Restored D:\Projects\CefSharpNETCoreTest\CefSharpNETCoreTest\CefSharpNETCoreTest.csproj (in 39 ms).
1>------ Rebuild All started: Project: CefSharpNETCoreTest, Configuration: Debug Any CPU ------
1>D:\Projects\CefSharpNETCoreTest\CefSharpNETCoreTest\App.xaml.cs(17,13,17,23): error CS0103: The name 'CefRuntime' does not exist in the current context
1>Done building project "CefSharpNETCoreTest.csproj" -- FAILED.
1>CefSharpNETCoreTest -> D:\Projects\CefSharpNETCoreTest\CefSharpNETCoreTest\bin\Debug\net48\CefSharpNETCoreTest.exe
========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========

Mentioned location is here: https://github.com/kekyo/CefSharpNETCoreTest/blob/main/CefSharpNETCoreTest/App.xaml.cs#L17

[amaitland]

In future please include any error you are seeing in your initial question.

The CefRuntime class is only in the older. Net 4.x packages. .Net Core handles dependency resolution totally differently.

https://github.com/cefsharp/CefSharp/blob/master/CefSharp/CefSharp.netcore.csproj#L49

You need to conditionally compile the call to CefRuntime. https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/preprocessor-directives#conditional-compilation

[kekyo]

Sorry, the first error CefSettings and Cef not found, is more complex than the minimal code I rewrote above. That may have caused the error on this line as well.

I checked again and found that the only error was CefRuntime not found, just like the error that occurred in the minimal code above. So I had written code to use CefRuntime, which I had added by referring to previous issues #1714 with the intention of doing AnyCPU support. However:

The CefRuntime class is only in the older. Net 4.x packages. .Net Core handles dependency resolution totally differently.
You need to conditionally compile the call to CefRuntime.

So does this mean that for netcoreapp3.1, the CefRuntime code is not needed? As shown below:

        // https://github.com/cefsharp/CefSharp/issues/1714

        public App()
        {
#if NETFRAMEWORK
            // Have to invokes only .NET Framework environment.
            CefRuntime.SubscribeAnyCpuAssemblyResolver();
#endif

            //Any CefSharp references have to be in another method with NonInlining
            // attribute so the assembly rolver has time to do it's thing.
            InitializeCefSharp();
        }

        [MethodImpl(MethodImplOptions.NoInlining)]
        private static void InitializeCefSharp()
        {
            var settings = new CefSettings();

            Cef.Initialize(settings, performDependencyCheck: true, browserProcessHandler: null);
        }

Is my understanding correct? When I tested it, it did indeed compile and work successfully, but is this code okay as a way to support AnyCPU?

[amaitland]

Is my understanding correct? When I tested it, it did indeed compile and work successfully, but is this code okay as a way to support AnyCPU?

Looks fine to me.

[kekyo]

Thank you your advice!