private void DataCollect(ushort DC_cardnum, ushort DC_chnum) //采集不同通道电压的函数 { string str_tmp; short err; double voltage; err = D2KDASK.D2K_AI_VReadChannel(DC_cardnum, DC_chnum, out voltage); //输出通道1电压 if (err < 0) { MessageBox.Show("D2K_AI_VReadChannel error!"); return; } str_tmp = string.Format("{0}", voltage); textBox1.Text = str_tmp; }