重构：使用不带范围的语句，隐式的Dispose调用何时发生？

Question

前几天我在重构，碰到类似的东西：

public async Task<Result> Handle(CancelInitiatedCashoutCommand command, CancellationToken cancellationToken)
{
    using (_logger.BeginScope("{@CancelCashoutCommand}", command))
    {
        return await GetCashoutAsync(command.CashoutId)
            .Bind(IsStatePending)
            .Tap(SetCancelledStateAsync)
            .Tap(_ => _logger.LogInformation("Cashout cancellation succeeded."));
    }
}

ReSharper建议将其重构为：

public async Task<Result> Handle(CancelInitiatedCashoutCommand command, CancellationToken cancellationToken)
{
    using var scope = _logger.BeginScope("{@CancelCashoutCommand}", command);
    return await GetCashoutAsync(command.CashoutId)
        .Bind(IsStatePending)
        .Tap(SetCancelledStateAsync)
        .Tap(_ => _logger.LogInformation("Cashout cancellation succeeded."));
}

我有点怀疑，实际上我不确定第二个版本何时会发生隐式Dispose调用。

我怎么知道？

Answer 1

Answer 2