如何在HostedService中引发事件并在Blazor组件中使用它？

public class MyHostedService : BackgroundService
{
    public event EventHandler<MyEventArgs> MyEvent;

    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
    {
        while (!stoppingToken.IsCancellationRequested)
        {
            // 执行后台任务逻辑

            // 触发事件
            OnMyEvent(new MyEventArgs("Event data"));

            await Task.Delay(1000, stoppingToken);
        }
    }

    protected virtual void OnMyEvent(MyEventArgs e)
    {
        MyEvent?.Invoke(this, e);
    }
}

public class MyEventArgs : EventArgs
{
    public string Data { get; }

    public MyEventArgs(string data)
    {
        Data = data;
    }
}

@page "/mycomponent"

@inject MyHostedService MyService

<h3>My Component</h3>

<p>Event data: @eventData</p>

@code {
    private string eventData;

    protected override void OnInitialized()
    {
        MyService.MyEvent += HandleMyEvent;
    }

    private void HandleMyEvent(object sender, MyEventArgs e)
    {
        eventData = e.Data;
        StateHasChanged();
    }

    protected override void Dispose(bool disposing)
    {
        MyService.MyEvent -= HandleMyEvent;
        base.Dispose(disposing);
    }
}