Doesn't load after update to 101.0.180 for WPF .NET 6.0

[pornganizer]

• What version of the product are you using?
  CefSharp.Wpf.NETCore -Version 101.0.180

• What architecture x86 or x64?
  x64

• What version of .Net?
  

• On what operating system?
  Win10

• Are you using WinForms, WPF or OffScreen?
  WPF

• What steps will reproduce the problem?
  Start the app and attempt to Initialize

            var settings = new CefSettings()
            {
                CachePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "CefSharp\\Cache"),
                LogSeverity = LogSeverity.Default
            };

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

• What is the expected output? What do you see instead?

System.Exception: 'Unable to locate required Cef/CefSharp dependencies:
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\libcef.dll
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\icudtl.dat
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\snapshot_blob.bin
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\v8_context_snapshot.bin
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\resources.pak
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\chrome_100_percent.pak
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\chrome_200_percent.pak
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\libEGL.dll
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\libGLESv2.dll
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\d3dcompiler_47.dll
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\chrome_elf.dll
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\CefSharp.BrowserSubprocess.exe
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\CefSharp.BrowserSubprocess.Core.dll
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\icudtl.dat
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\libcef.dll
Missing:..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1\locales\en-US.pak
Executing Assembly Path:C..\bin\Debug\net6.0-windows\runtimes\win-x64\lib\netcoreapp3.1

• Please provide any additional information below.

  • No debug.log is generated
  • it worked before the update
  • the referenced directory contains only four files - i am not manipulating this directory in any way
    

• Does this problem also occur in the CEF Sample Application

  • the sample application loads file

[amaitland]

Converting to discussion as not clear this is a bug. There haven't been any package changes for quite some time.

Please test with https://github.com/cefsharp/CefSharp.MinimalExample

What version are you upgrading from?

Have you deleted your bin and obj folders? Or performed a clean checkout.

[pornganizer]

Please test with https://github.com/cefsharp/CefSharp.MinimalExample

what do you want me to test? the wpf project loads and runs just fine, but the project is configured differently, note the samples target framework vs my wpf app

What version are you upgrading from?

nuget package version 100.0.230

Have you deleted your bin and obj folders? Or performed a clean checkout.

yes i did read this as a common fix, tried it a bunch of times with VS closed even

[amaitland]

what do you want me to test? the wpf project loads and runs just fine, but the project is configured differently, note the samples target framework vs my wpf app

How does your project differ? What does your csproj look like, not interested in the UI.

Fork the minimal example, change the project so it matches yours, if the problem reproduces then push the changes to GitHub so I can compare.

nuget package version 100.0.230

Only minor changes since then, you can easily compare v100.0.230...v101.0.180

[amaitland]

Creating a new .Net 6.0 WPF application and installing CefSharp.Wpf.NetCore works as expected.

• Create new WPF Appication targeting .Net 6.0
• Install CefSharp.Wpf.NETCore version 101.0.180
• Add <cefsharp:ChromiumWebBrowser Address="http://google.com"/> and xmlns
• Build
• Run

Application builds and starts as expected.

<TargetFramework>net6.0-windows</TargetFramework>

Adding a RuntimeIdentifier also works as expected (recommended).

<RuntimeIdentifier>win-x64</RuntimeIdentifier>

[pornganizer]

i am able to run a sample project with the same configuration as my project without any issues
i am not sure how to debug this further
i am being presented with an error message in OnStartup about cefsharp not finding files in a cefsharp created directory
i've been using cefsharp for over a year in this project without an issue until the latest nuget update

[amaitland]

No changes were made to the Nuget package structure, it's a simple minor upgrade so in general I don't expect any problems.

• Perform a clean checkout from source control
• Rollback changes and confirm previous version works as expected
• Change msbuild output to normal or higher and look for errors/warnings in the log.
• Call CefSharpAfterBuildDiagnostic in your csproj and provide the output here https://github.com/cefsharp/CefSharp.MinimalExample/blob/cefsharp/101/CefSharp.MinimalExample.Wpf/CefSharp.MinimalExample.Wpf.netcore.csproj#L79

So far this is the only report of a problem, potentially the problem is specific to your environment.

[pornganizer]

Rollback changes and confirm previous version works as expected

after downgrading to 100.0.230, my app no longer builds successfully

Assembly 'CefSharp.Wpf' with identity 'CefSharp.Wpf, Version=101.0.180.0, Culture=neutral, PublicKeyToken=40c4b6fc221f4138' uses 'CefSharp.Core, Version=101.0.180.0, Culture=neutral, PublicKeyToken=40c4b6fc221f4138' which has a higher version than referenced assembly 'CefSharp.Core' with identity 'CefSharp.Core, Version=100.0.230.0

do i need to do something other than install-package cefsharp.wpf.netcore -version 100.0.230 to downgrade?

Change msbuild output to normal or higher and look for errors/warnings in the log.

the log is quite large. is there anything i should be looking for specifically? here are some highlights containing cefsharp

warning NU1701: Package 'CefSharp.Wpf 101.0.180' was restored using '.NETFramework,Version=v4.6.1, .NETFramework,Version=v4.6.2, .NETFramework,Version=v4.7, .NETFramework,Version=v4.7.1, .NETFramework,Version=v4.7.2, .NETFramework,Version=v4.8' instead of the project target framework 'net6.0-windows7.0'. This package may not be fully compatible with your project.

Target "CefSharpPlatformCheck" skipped, due to false condition; (('@(AppConfigWithTargetPath)' == '' OR !Exists('$(CefSharpTransformXmlDllPath)')) AND '$(CefSharpPlatformTarget)' == 'AnyCPU' AND '$(CefSharpAnyCpuSupport)' != 'true' AND '$(CefSharpBuildAction)' != 'NoAction') was evaluated as (('' == '' OR !Exists('C:\Program Files\Microsoft Visual Studio\2022\Community\MSBuild\Microsoft\VisualStudio\v17.0\Web\Microsoft.Web.Publishing.Tasks.dll')) AND 'x64' == 'AnyCPU' AND 'true' != 'true' AND 'Content' != 'NoAction').

6>    Encountered conflict between 'Reference:C:\Users\...\.nuget\packages\cefsharp.wpf\101.0.180\lib\net452\CefSharp.Wpf.dll' and 'Reference:C:\Users\...\.nuget\packages\cefsharp.wpf.netcore\101.0.180\ref\netcoreapp3.1\CefSharp.Wpf.dll'. Could not determine winner due to equal file and assembly versions.
6>    Encountered conflict between 'CopyLocal:C:\Users\...\.nuget\packages\cefsharp.wpf\101.0.180\lib\net452\CefSharp.Wpf.dll' and 'CopyLocal:C:\Users\...\.nuget\packages\cefsharp.wpf.netcore\101.0.180\lib\netcoreapp3.1\CefSharp.Wpf.dll'. Choosing 'CopyLocal:C:\Users\...\.nuget\packages\cefsharp.wpf\101.0.180\lib\net452\CefSharp.Wpf.dll' arbitrarily as both items are copy-local and have equal file and assembly versions.

Call CefSharpAfterBuildDiagnostic in your csproj and provide the output here

6>    CefSharp After Build Diagnostic
6>    CefSharpBuildAction = Default
6>    RuntimeIdentifier =
6>    CefSharpRuntimeIdentifier =
6>    Platform = AnyCPU
6>    PlatformName = AnyCPU
6>    Platforms = AnyCPU;x64
6>    PlatformTarget = x64
6>    PlatformTargetAsMSBuildArchitecture = x64
6>    TargetFramework = net6.0-windows
6>    TargetFrameworkVersion = v6.0
6>    NuGetProjectStyle = PackageReference
6>    SelfContained = false
6>    PublishSingleFile = true
6>    OutDir = bin\Debug\net6.0-windows\
6>    _CefSharpBrowserSubProcessFiles = C:\Users\...\.nuget\packages\cefsharp.common.netcore\101.0.180\runtimes\native\CefSharp.BrowserSubprocess.runtimeconfig.json
6>    IncludeAllContentForSelfExtract = true
6>    IncludeNativeLibrariesForSelfExtract =

So far this is the only report of a problem, potentially the problem is specific to your environment.

most likely

[amaitland]

do i need to do something other than install-package cefsharp.wpf.netcore -version 100.0.230 to downgrade?

I'd suggest rolling back to a previous commit using source control. Your project file likely has mistakes.

warning NU1701: Package 'CefSharp.Wpf 101.0.180' was restored using '.NETFramework,Version=v4.6.1, .NETFramework,Version=v4.6.2, .NETFramework,Version=v4.7, .NETFramework,Version=v4.7.1, .NETFramework,Version=v4.7.2, .NETFramework,Version=v4.8' instead of the project target framework 'net6.0-windows7.0'. This package may not be fully compatible with your project.

You appear to be referencing the CefSharp.Wpf package also somewhere in your build. This shouldn't be there if you are only targeting .Net 6.0

PublishSingleFile = true

Remove PublishSingleFile from your csproj or set it to false.

So far this is the only report of a problem, potentially the problem is specific to your environment.

most likely

I'd say you have an incorrectly configured project file. Probably worked by good luck before.

[pornganizer]

You appear to be referencing the CefSharp.Wpf package also somewhere in your build. This shouldn't be there if you are only targeting .Net 6.0

thank you so much!!
this was the key. my startup project was referencing a library that incorrectly had a reference to CefSharp.Wpf
uninstalling it resolved the issue.

thanks so much!

[kpreisser]

Hi,
please try specifying false for performDependencyCheck:

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

For .NET Core/.NET 5+, the native files (like libcef.dll) are in a different folder (native instead of lib\netcoreapp3.1) in the runtimes folder, which is why the dependency check won't find them when you don't publish the application using a platform-specific runtime identifier like win-x64.

[pornganizer]

If I specify false, the app crashes as soon as it tries to load a CefSharp control.

[kpreisser]

Sorry, you're right that this shouldn't be the problem, as in the current versions the DependencyChecker should search for the native files in the correct location for .NET Core/.NET 5+, so it should also work when performDependencyCheck is true.

[amaitland]

@kpreisser Are you experiencing any problems?

[kpreisser]

Hi @amaitland,
in normal usage I think the dependency check works; just when self-hosting the subprocess and not using a Runtime Identifier (with .NET Core/.NET 5+), the dependency check would fail as it would search for libcef.dll etc. in the directory of the app host (.exe), whereas the files would actually be in the runtimes subfolder in this case.

Therefore I first thought the dependency check might still generally fail for .NET Core/5+ without a RID, but then I realized from the code that the dependency check searches for the files in the browser subprocess directory (and the OP doesn't set a custom BrowserSubprocessPath), so it should work in this case.
Thanks!