I referred to this official tutorial: https://learn.microsoft.com/zh-cn/dotnet/csharp/roslyn-sdk/source-generators-overview , but it didn’t work as expected.

The Source Generator project I created contains the following two files:

TestSourceGenerator.csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>netstandard2.0</TargetFramework>
    <LangVersion>latest</LangVersion>
    <EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.9.2" PrivateAssets="all" />
    <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4" PrivateAssets="all" />
  </ItemGroup>
</Project>

TestGenerator.cs

using Microsoft.CodeAnalysis;

namespace TestSourceGenerator
{
    [Generator]
    public class TestGenerator : ISourceGenerator
    {
        public void Execute(GeneratorExecutionContext context)
        {
            var mainMethod = context.Compilation.GetEntryPoint(context.CancellationToken);

            string source = $@"// <auto-generated/>
using System;

namespace {mainMethod.ContainingNamespace.ToDisplayString()}
{{
    public static partial class {mainMethod.ContainingType.Name}
    {{
        static partial void HelloFrom(string name) =>
            Console.WriteLine($""Generator says: Hi from '{{name}}'"");
    }}
}}
";
            var typeName = mainMethod.ContainingType.Name;

            context.AddSource($"{typeName}.g.cs", source);
        }

        public void Initialize(GeneratorInitializationContext context)
        {
            
        }
    }
}

And then i create a console project to reference it like tutorial:
Test.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <ItemGroup>
    <ProjectReference 
      Include="..TestSourceGeneratorTestSourceGenerator.csproj" 
      OutputType="Analyzer"
      ReferenceOutputAssembly="false"
    />
  </ItemGroup>

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net7.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
  </PropertyGroup>

</Project>

Program.cs

namespace Test;

partial class Program
{
    static void Main(string[] args)
    {
        HelloFrom("Generated Code");
    }

    static partial void HelloFrom(string name);
}

I use dotnet run in terminel to run this Test project, but there is no output.

At which step did i go wrong?

dotnet –info

.NET SDK:
 Version:   7.0.120
 Commit:    25b977658c

运行时环境:
 OS Name:     Windows
 OS Version:  10.0.22631
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:Program Filesdotnetsdk7.0.120

Host:
  Version:      8.0.8
  Architecture: x64
  Commit:       08338fcaa5

.NET SDKs installed:
  6.0.425 [C:Program Filesdotnetsdk]
  7.0.120 [C:Program Filesdotnetsdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 6.0.33 [C:Program FilesdotnetsharedMicrosoft.AspNetCore.App]
  Microsoft.AspNetCore.App 7.0.20 [C:Program FilesdotnetsharedMicrosoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.33 [C:Program FilesdotnetsharedMicrosoft.NETCore.App]
  Microsoft.NETCore.App 7.0.20 [C:Program FilesdotnetsharedMicrosoft.NETCore.App]
  Microsoft.NETCore.App 8.0.8 [C:Program FilesdotnetsharedMicrosoft.NETCore.App]
  Microsoft.WindowsDesktop.App 6.0.33 [C:Program FilesdotnetsharedMicrosoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 7.0.20 [C:Program FilesdotnetsharedMicrosoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 8.0.8 [C:Program FilesdotnetsharedMicrosoft.WindowsDesktop.App]

Other architectures found:
  None

Environment variables:
  Not set

global.json file:
  Not found

Learn more:
  https://aka.ms/dotnet/info

Download .NET:
  https://aka.ms/dotnet/download