how to await an event handler invocation?

Question

basically, i have a method which invokes an event handler. the event handler calls an async method and i need to know the results of that method (true or false). since event

Answer 1

You could declare the Success property as Task instead of bool. Then assign it inside the handler like this:

private void SomeEventHandler(object sender, MyEventArgs e)
{
    e.Success = AnAsyncMethod(); // Without await
}

At the end you would be able to get the result after invoking the event and awaiting the property.

public virtual async Task TrySomething()
{
    var args = new MyEventArgs();
    SomeEvent?.Invoke(this, args);
    return await (args.Success ?? Task.FromResult(false));
}