private void btnCreateCaptionStep_Click(object sender, EventArgs e) { if (_presentation != null) { _presentation.CreateCaptionStep(gviPresentationStepContinue.gviPresentationStepContinueWait, 2, "", "当前是第" + _presentation.Steps.Count + "个step,当前时间是:" + DateTime.Now, -1, _presentation.Steps.Count); } }