我有一個(gè)引用以下代碼的 Windows 服務(wù)。使用下面的方法，我的代碼包含一個(gè)try..catch塊，但它似乎并沒有catch RefereshTokenException認(rèn)為是thrown在下面的方法。顯然我的理解async是不正確的。private async void RefreshTokens(){    try    {        var cognito = new CognitoApi();        var response = cognito.TokenRefresh(_refreshToken);        if (response.HttpStatusCode == HttpStatusCode.OK)        {            _idToken = new AwsToken(response.AuthenticationResult.IdToken);            _accessToken = new AwsToken(response.AuthenticationResult.AccessToken);        }        else        {            await _signIn(_credentials.SiteId, _credentials.LocationId, null);        }    }    catch (NotAuthorizedException)    {        await _signIn(_credentials.SiteId, _credentials.LocationId, null);    }    catch (Exception ex)    {        throw new RefreshTokenException("Failed refreshing tokens.", ex);    }}這是調(diào)用的代碼 RefreshTokenspublic async void Process(QueueMessage queueMessage, Action<QueueMessage> retryAction){    _processingCounter.Increment();    try    {        ......        IAwsToken idToken = authenticationService.Tokens.IdToken; //This is the code that calls "RefreshTokens" method        ........    }    catch (Exception ex)    {        //Code never reaches here...        _logger.Error("Error in ProcessMessage", ex);    }    _processingCounter.Decrement();}