//チャンネル数取得 private void caioGetChannel() { short ch = 0; int aioChannelState = aio.GetAiMaxChannels(devId, out ch); if (aioChannelState != 0) { statusMsg(aioChannelState, null); return; } else { xAxisListBox.Items.Clear(); yAxisListBox.Items.Clear(); for (int i = 0; i < ch; ++i) { xAxisListBox.Items.Add(i); yAxisListBox.Items.Add(i); } xAxisListBox.SelectedIndex = 0; yAxisListBox.SelectedIndex = 1; } maxChLabel.Text = ch.ToString() + "ch"; }