如何知道哪些代码正在注入我的 DI 服务？

Question

在 C# 中，具有典型的依赖注入服务设置。我注册了自己的定制服务并且运行良好。但是，我发现它有时会被调用（注入），这是我没有预料到的。 所以我想调试并知道什么代码想要注入我的服务？我不知道如何做到这一点。

示例：

// Program startup I register my service as normal.
services.AddTransient<MyCustomService>();
// And other stuff...
services.AddTransient<SomeOtherThing>();
services.AddTransient<AndAnother>();
services.AddTransient<AndMore>();

public class MyCustomService
{
    public MyCustomService()
    {
        // My service works fine, but can it know who is requesting it?
        // WHO IS REQUESTING ME FROM DI?

        // Note that this is not intended for some weird hacky functionality,
        // rather I'm trying to debug why my service is being invoked more than expected.
    }
}

// Some other services/controllers/etc that are pulling in MyCustomService from DI
...
    public SomeOtherThing(MyCustomService mcs) { ... }
...
    public AndAnother(MyCustomService mcs) { ... }
...
    public AndMore(MyCustomService mcs) { ... }
...

Answer 1

在您的服务中放置一个断点。当在这些意外时间命中断点时，请检查Call Stack以找出服务调用的来源。如果您有 VS Enterprise，您甚至可以检查调用堆栈作为可视化地图。