方法作用域变量的事件会发生什么?

public class Bar {
    Foo foo;
    void Go() {
       foo = new Foo();
       foo.Send(...);

       foo.Dispose();
       foo = null; 
    }
}

public class Foo : IDisposable {   
    public void Send(byte[] bytes) {
        SocketAsyncEventArgs args = new SocketAsyncEventArgs();
        args.SetBuffer(bytes, 0, bytes.Length);
        args.UserToken = socket;
        args.RemoteEndPoint = endPoint;
        args.Completed += new EventHandler<SocketAsyncEventArgs>(OnSendCompleted);

        socket.SendAsync(args);
    }

    private void OnSendCompleted(object sender, SocketAsyncEventArgs e) {
        Debug.WriteLine("great");
    }

    public void Dispose() {
       //
    }
}

因此,class Bar运行Init方法,该方法实例化Foo类并触发Send方法,然后销毁Foo实例。Send方法同时实例化一个方法级别的SocketAsyncEventArgs,设置一个完成的事件,然后触发SendAsync方法。