Csharp 我的 c# 8.0 using 声明会正确处理我的对象吗什么时候处理

using var clientWebSocket = new ClientWebSocket();只是语法上的糖分，它是:

private async Task<bool> ConnectAsync(CancellationToken cancellationToken)
{
    using( var clientWebSocket = new ClientWebSocket())
    {
        _clientWebSocket = clientWebSocket;

        try
        {
            await clientWebSocket.ConnectAsync(new Uri(_url), cancellationToken);
        }
        catch
        {
            return false;
        }

        try
        {
            while (clientWebSocket.State == WebSocketState.Open && !cancellationToken.IsCancellationRequested)
            {
                var bytesReceived = new ArraySegment<byte>(new byte[1024]);
                var receiveResult = await clientWebSocket.ReceiveAsync(bytesReceived, cancellationToken);
                var message = Encoding.UTF8.GetString(bytesReceived.Array, 0, receiveResult.Count);
                
                ...
            }
        }
        catch
        {
            return false;
        }

        try
        {
            if (clientWebSocket.State == WebSocketState.Open)
            {
                await clientWebSocket.CloseAsync(WebSocketCloseStatus.NormalClosure, "bye", CancellationToken.None);
            }
        }
        catch
        {
            return false;
        }

        return true;

    }
}

这是以下的缩写:

private async Task<bool> ConnectAsync(CancellationToken cancellationToken)
{
    var clientWebSocket = new ClientWebSocket();
    try
    {
        _clientWebSocket = clientWebSocket;

        try
        {
            await clientWebSocket.ConnectAsync(new Uri(_url), cancellationToken);
        }
        catch
        {
            return false;
        }

        try
        {
            while (clientWebSocket.State == WebSocketState.Open && !cancellationToken.IsCancellationRequested)
            {
                var bytesReceived = new ArraySegment<byte>(new byte[1024]);
                var receiveResult = await clientWebSocket.ReceiveAsync(bytesReceived, cancellationToken);
                var message = Encoding.UTF8.GetString(bytesReceived.Array, 0, receiveResult.Count);
                
                ...
            }
        }
        catch
        {
            return false;
        }

        try
        {
            if (clientWebSocket.State == WebSocketState.Open)
            {
                await clientWebSocket.CloseAsync(WebSocketCloseStatus.NormalClosure, "bye", CancellationToken.None);
            }
        }
        catch
        {
            return false;
        }

        return true;

    }
    finally
    {
        if (clientWebSocket != null) {
            ((IDisposable)clientWebSocket).Dispose();  
        }
    }
}

我认为它也值highlighting this comment英镑:

我更担心的是你在处理你分配的东西

clientWebSocket会被处理掉，但因为你把_clientWebSocket分配给这个(_clientWebSocket = clientWebSocket;)，the object that varibale is pointing at will get disposed as well！它们是一样的.他们互相参照.我想这不是你想在这里发生的事情，但很难从你分享的代码中分辨出来.