我正在尽可能地从Microsoft 网站示例中复制所有内容，但没有生成任何内容。我创建了一个 MCVE 来尝试找出发生以下错误的原因：
Warning CS8034
Unable to load Analyzer assembly C:\Users\me\source\repos\SourceGenTest\SourceGenerators\bin\Debug\netstandard2.0\SourceGenerators.dll:
Could not find file 'C:\Users\me\source\repos\SourceGenTest\SourceGenerators\bin\Debug\netstandard2.0\SourceGenerators.dll'.
SourceGenLibrary 1 Active
我已经检查了提供的路径，并且SourceGenerators.dll存在。这个错误对我来说毫无意义。
注意：在我提供的 MCVE 中，显然没有构建警告。不知道为什么，但是源生成器仍然没有输出。
我的目标是有一个像这样的工作流程：
SourceGenerators (class library)
is consumed by
SourceGenLibrary (class library)
is consumed by
SourceGenConsole (Console project)
因此，我想要一个分析器在类库中生成定义，该类库将在许多项目之间共享。上述工作流程将其简化为一个依赖于一个库的项目，该库依赖于源生成器，以保持 MCVE-as-possible。
因为复制所有这些东西很烦人，如果你很懒，这里有一个上传链接：下载链接 MCVE（据说发布后一周到期，但来源如下）。
相关资料：
$ dotnet --version
5.0.201
$ dotnet --list-sdks
5.0.103 [C:\Program Files\dotnet\sdk]
5.0.201 [C:\Program Files\dotnet\sdk]
这些是源文件及其包含的内容。
/SourceGenTest.sln
Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 16
VisualStudioVersion = 16.0.31112.23
MinimumVisualStudioVersion = 10.0.40219.1
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SourceGenLibrary", "SourceGenLibrary\SourceGenLibrary.csproj", "{8702B80A-ACA3-4546-BBE8-A9FEE686A758}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SourceGenerators", "SourceGenerators\SourceGenerators.csproj", "{D693D3B2-F981-4D6D-AC97-B8C636E8C5C0}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SourceGenConsole", "SourceGenConsole\SourceGenConsole.csproj", "{3730848C-847C-4DF9-A0B3-5ADB5FE9D1E0}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Release|Any CPU = Release|Any CPU
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{8702B80A-ACA3-4546-BBE8-A9FEE686A758}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{8702B80A-ACA3-4546-BBE8-A9FEE686A758}.Debug|Any CPU.Build.0 = Debug|Any CPU
{8702B80A-ACA3-4546-BBE8-A9FEE686A758}.Release|Any CPU.ActiveCfg = Release|Any CPU
{8702B80A-ACA3-4546-BBE8-A9FEE686A758}.Release|Any CPU.Build.0 = Release|Any CPU
{D693D3B2-F981-4D6D-AC97-B8C636E8C5C0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{D693D3B2-F981-4D6D-AC97-B8C636E8C5C0}.Debug|Any CPU.Build.0 = Debug|Any CPU
{D693D3B2-F981-4D6D-AC97-B8C636E8C5C0}.Release|Any CPU.ActiveCfg = Release|Any CPU
{D693D3B2-F981-4D6D-AC97-B8C636E8C5C0}.Release|Any CPU.Build.0 = Release|Any CPU
{3730848C-847C-4DF9-A0B3-5ADB5FE9D1E0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{3730848C-847C-4DF9-A0B3-5ADB5FE9D1E0}.Debug|Any CPU.Build.0 = Debug|Any CPU
{3730848C-847C-4DF9-A0B3-5ADB5FE9D1E0}.Release|Any CPU.ActiveCfg = Release|Any CPU
{3730848C-847C-4DF9-A0B3-5ADB5FE9D1E0}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {A3752997-47E1-4086-87C8-1583B5E0EDF1}
EndGlobalSection
EndGlobal
/SourceGenerators/SourceGenerators.csproj
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netstandard2.0</TargetFramework>
<LangVersion>preview</LangVersion>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.2" />
<PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.9.0" />
</ItemGroup>
</Project>
/SourceGenerators/Class1.cs
using System.Text;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Text;
namespace SourceGeneratorSamples
{
[Generator]
public class HelloWorldGenerator : ISourceGenerator
{
public void Execute(GeneratorExecutionContext context)
{
// begin creating the source we'll inject into the users compilation
var sourceBuilder = new StringBuilder(@"
using System;
namespace HelloWorldGenerated
{
public static class HelloWorld
{
public static void SayHello()
{
Console.WriteLine(""Hello from generated code!"");
Console.WriteLine(""The following syntax trees existed in the compilation that created this program:"");
");
// using the context, get a list of syntax trees in the users compilation
var syntaxTrees = context.Compilation.SyntaxTrees;
// add the filepath of each tree to the class we're building
foreach (SyntaxTree tree in syntaxTrees)
{
sourceBuilder.AppendLine($@"Console.WriteLine(@"" - {tree.FilePath}"");");
}
// finish creating the source to inject
sourceBuilder.Append(@"
}
}
}");
// inject the created source into the users compilation
context.AddSource("helloWorldGenerator", SourceText.From(sourceBuilder.ToString(), Encoding.UTF8));
}
public void Initialize(GeneratorInitializationContext context)
{
}
}
}
/SourceGenLibrary/SourceGenLibrary.csproj
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>net5.0</TargetFramework>
<LangVersion>preview</LangVersion>
<AssemblyName>SourceGenLibrary</AssemblyName>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\SourceGenerators\SourceGenerators.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
</ItemGroup>
</Project>
/SourceGenLibrary/Class1.cs
using System;
namespace SourceGenTest
{
public class Class1
{
public static void Func()
{
//HelloWorldGenerator.HelloWorld.SayHello();
}
}
}
/SourceGenConsole/SourceGenConsole.csproj
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net5.0</TargetFramework>
<LangVersion>preview</LangVersion>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\SourceGenLibrary\SourceGenLibrary.csproj" />
</ItemGroup>
</Project>
/SourceGenConsole/Program.cs
using System;
namespace SourceGenConsole
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
}
}
}