所以，我有这个项目，我们将调用X. X是在.NET Core 3.1中开发的控制台应用程序，我想给予这个应用程序一个与Unity的接口。这个应用程序的核心部分是基于一些文本的代码的动态生成。在X中，我使用Roslyn来完成。我已经通过NuGet安装了Microsoft.CodeAnlysis.CSharp.Scripting包和它携带的所有包，它工作得很好。在Unity中“转换”项目（在播放器设置中设置为.NET Framework编译）我做了我认为是最简单的事情。我将X文件夹中的所有脚本复制并粘贴到Unity Asset文件夹中，并开始重写需要重写的内容。一切都很顺利，直到我到达代码生成部分。经过一番折腾，我发现了NuGetForUnity，我用它来获取我在最新版本的X中使用的相同NuGet包。安装了所有东西后，我尝试运行我的应用程序。我得到了这个错误：

> System.NotImplementedException: The method or operation is not implemented.
  at System.Runtime.Loader.AssemblyLoadContext.LoadFromStream (System.IO.Stream assembly, System.IO.Stream assemblySymbols) [0x00000] in <b903c2b7b82245b2878c8afa0d6b7576>:0 
  at Microsoft.CodeAnalysis.Scripting.Hosting.CoreAssemblyLoaderImpl.LoadFromStream (System.IO.Stream peStream, System.IO.Stream pdbStream) [0x00000] in <7da58dd2a6fc48459bcdbf30dedfadbc>:0 
  at Microsoft.CodeAnalysis.Scripting.Hosting.InteractiveAssemblyLoader.LoadAssemblyFromStream (System.IO.Stream peStream, System.IO.Stream pdbStream) [0x00000] in <7da58dd2a6fc48459bcdbf30dedfadbc>:0 
  at Microsoft.CodeAnalysis.Scripting.ScriptBuilder.Build[T] (Microsoft.CodeAnalysis.Compilation compilation, Microsoft.CodeAnalysis.DiagnosticBag diagnostics, System.Boolean emitDebugInformation, System.Threading.CancellationToken cancellationToken) [0x000c6] in <7da58dd2a6fc48459bcdbf30dedfadbc>:0 
  at Microsoft.CodeAnalysis.Scripting.ScriptBuilder.CreateExecutor[T] (Microsoft.CodeAnalysis.Scripting.ScriptCompiler compiler, Microsoft.CodeAnalysis.Compilation compilation, System.Boolean emitDebugInformation, System.Threading.CancellationToken cancellationToken) [0x00026] in <7da58dd2a6fc48459bcdbf30dedfadbc>:0 
  at Microsoft.CodeAnalysis.Scripting.Script`1[T].GetExecutor (System.Threading.CancellationToken cancellationToken) [0x0002b] in <7da58dd2a6fc48459bcdbf30dedfadbc>:0 
  at Microsoft.CodeAnalysis.Scripting.Script`1[T].CreateDelegate (System.Threading.CancellationToken cancellationToken) [0x0000d] in <7da58dd2a6fc48459bcdbf30dedfadbc>:0 
  at CodeGenerator.GenericExternalBuilder[T] (System.Collections.Concurrent.ConcurrentDictionary`2[TKey,TValue] coll) [0x008c2] in C:\Users\User\Documents\uXCOM\Assets\Scripts\CodeGenerator.cs:198 
  at (wrapper dynamic-method) System.Object.CallSite.Target(System.Runtime.CompilerServices.Closure,System.Runtime.CompilerServices.CallSite,System.Type,object)
  at System.Dynamic.UpdateDelegates.UpdateAndExecuteVoid2[T0,T1] (System.Runtime.CompilerServices.CallSite site, T0 arg0, T1 arg1) [0x00113] in <dab7f68612224ba3ae40f651d44f9d4c>:0 
  at CodeGenerator.InitializeAllExternals () [0x00026] in C:\Users\User\Documents\uXCOM\Assets\Scripts\CodeGenerator.cs:52 
UnityEngine.Debug:LogError (object)
XCOM.XLogger:FixedUpdate () (at Assets/Scripts/XLogger.cs:100)

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真正让我烦恼的是主要的异常是NotImplementedException。我的第一个想法是最新版本不是一个稳定的版本，所以我降级到NuGetForUnity，但另一个异常被抛出。（我没有带在身上，但如果有用的话我会提供的）。之后我尝试了我能想到的一切：降级到我在X中使用的版本，通过.unitypackage安装相同的包，不同版本的包，在播放器设置中将编译器版本切换到.NET Standard 2.1，我将留下一段抛出相同异常的代码，以便在您的项目中可重现：

private void Test()
{
    string code = "{ int a = 1; int b = 3; return a + b; }";
    ScriptRunner<int> script = CSharpScript.Create<int>(code).CreateDelegate();
    Debug.Log(script.Invoke());
}

型
这抛出了相同类型的异常，只是有点不同：

> NotImplementedException: The method or operation is not implemented.
System.Runtime.Loader.AssemblyLoadContext.LoadFromStream (System.IO.Stream assembly, System.IO.Stream assemblySymbols) (at <b903c2b7b82245b2878c8afa0d6b7576>:0)
Microsoft.CodeAnalysis.Scripting.Hosting.CoreAssemblyLoaderImpl.LoadFromStream (System.IO.Stream peStream, System.IO.Stream pdbStream) (at <7da58dd2a6fc48459bcdbf30dedfadbc>:0)
Microsoft.CodeAnalysis.Scripting.Hosting.InteractiveAssemblyLoader.LoadAssemblyFromStream (System.IO.Stream peStream, System.IO.Stream pdbStream) (at <7da58dd2a6fc48459bcdbf30dedfadbc>:0)
Microsoft.CodeAnalysis.Scripting.ScriptBuilder.Build[T] (Microsoft.CodeAnalysis.Compilation compilation, Microsoft.CodeAnalysis.DiagnosticBag diagnostics, System.Boolean emitDebugInformation, System.Threading.CancellationToken cancellationToken) (at <7da58dd2a6fc48459bcdbf30dedfadbc>:0)
Microsoft.CodeAnalysis.Scripting.ScriptBuilder.CreateExecutor[T] (Microsoft.CodeAnalysis.Scripting.ScriptCompiler compiler, Microsoft.CodeAnalysis.Compilation compilation, System.Boolean emitDebugInformation, System.Threading.CancellationToken cancellationToken) (at <7da58dd2a6fc48459bcdbf30dedfadbc>:0)
Microsoft.CodeAnalysis.Scripting.Script`1[T].GetExecutor (System.Threading.CancellationToken cancellationToken) (at <7da58dd2a6fc48459bcdbf30dedfadbc>:0)
Microsoft.CodeAnalysis.Scripting.Script`1[T].CreateDelegate (System.Threading.CancellationToken cancellationToken) (at <7da58dd2a6fc48459bcdbf30dedfadbc>:0)
MainScript.Test () (at Assets/Scripts/MainScript.cs:33)
MainScript.Start () (at Assets/Scripts/MainScript.cs:22)

型
我期望它做的是在编辑器控制台4上打印。