C#创建websocket - onmessage函数不起作用

using System;
using System.Net.WebSockets;
using System.Threading;
using System.Threading.Tasks;

public class WebSocketClient
{
    private ClientWebSocket _webSocket;

    public async Task Connect(string url)
    {
        _webSocket = new ClientWebSocket();
        await _webSocket.ConnectAsync(new Uri(url), CancellationToken.None);

        // 启动接收消息的循环
        await ReceiveLoop();
    }

    private async Task ReceiveLoop()
    {
        var buffer = new byte[1024];
        while (_webSocket.State == WebSocketState.Open)
        {
            var result = await _webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), CancellationToken.None);

            if (result.MessageType == WebSocketMessageType.Text)
            {
                var message = System.Text.Encoding.UTF8.GetString(buffer, 0, result.Count);
                // 在这里处理接收到的消息
                Console.WriteLine("Received message: " + message);
            }
        }
    }
}