PowerShell 7.0.x 無法加載文件或程序集 Microsoft.CodeAnalysis

Question

I have a .NET Core 3.1 class Library which uses a nuget package called RazorEngineCore which references Microsoft.CodeAnalysis.CSharp v3.7.0 which then references Microsoft.CodeAnalysis.Common v3.7.0 when I use this in a .NET Core Exe or PowerShell 7.1 it works沒有問題，但是當我使用 PowerShell 7.0.x 時，我收到以下錯誤消息：

System.IO.FileLoadException: Could not load file or assembly 'Microsoft.CodeAnalysis, Version=3.7.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'.   at System.Runtime.Loader.AssemblyLoadContext.LoadFromPath(IntPtr ptrNativeAssemblyLoadContext, String ilPath, String niPath, ObjectHandleOnStack retAssembly)   at System.Runtime.Loader.AssemblyLoadContext.LoadFromAssemblyPath(String assemblyPath)   at System.Reflection.Assembly.LoadFrom(String assemblyFile)   at System.Reflection.Assembly.LoadFromResolveHandler(Object sender, ResolveEventArgs args)   at System.Runtime.Loader.AssemblyLoadContext.InvokeResolveEvent(ResolveEventHandler eventHandler, RuntimeAssembly assembly, String name)   at System.Runtime.Loader.AssemblyLoadContext.OnAssemblyResolve(RuntimeAssembly assembly, String assemblyFullName)

我啟用了融合日志記錄並且沒有 output 並且內部異常沒有提供對任何丟失 dll 的引用。 我正在調用的 powershell 代碼是這樣的：

    Add-Type -Path "$($PSScriptRoot)\ComponentHealth.Rendering.dll"

    $ViewModel = [PSCustomObject]@{
        Name     = 'Kevin'
    }

    $template = "Hello @Model.Name"

    try {
        $output = [ComponentHealth.Rendering.Rendering]::Render("Bob", $template, $ViewModel) 
    } catch {
        $ex = $_.Exception
        $base = $_.Exception.GetBaseException()
        Write-Host $ex
    }
    Write-Host $output 

我無法弄清楚為什么這在 exe 應用程序或 PowerShell 7.1.x 中有效，但在 PowerShell 7.0.x 中無效。 Unfortunately, I cannot use a different version of PowerShell as this needs to be added to an Azure App Function which is pinned at PowerShell runtime 7.0.3.

Answer 1

我們發現了問題，如果您嘗試導入 dll，其版本高於 PowerShell 核心運行時隨附的版本，您將在嘗試加載 dll 時遇到異常。 我們通過使用低於 PowerShell 7.0.3 附帶的 Microsoft.CodeAnalysis.CSharp 版本重新編譯RazorEngineCore package 解決了這個問題，現在一切正常。