Using the EventBus in pure C#

In this case you can use the IEventReceiverWithHooks interface, and declare your class, record or struct as partial.

The source generator will add the Hook() and Unhook() methods to the implementing class/record/struct which you can then call however you want

using MyAssemblyName.EventBusForUnity;

public partial class MyPureCsharpClass : IEventReceiverWithHooks
{
    // call Hook() where you would like to register your listeners
    // call Unhook() to de-register your listeners
    
    public MyPureCsharpClass()
    {
        Hook();
        Process();
    }
    
    ~MyPureCsharpClass() // recommended: use IDisposable instead
    {
        Unhook();
    }
    
    [Listener]
    private void OnHelloWorld(OnHelloWorldEvent message)
    {
        Console.WriteLine("Hello there from the listener");
    }
    
    public void Process() // just for demo, you can of course call this method anywhere in your application in the same assembly 
    {
        EventBus.Send(new OnHelloWorldEvent()
        {
            Message = "Hello World"
        });
    }
}