// Handles the "Start Listening"-buttom click event
private void btnStart_Click(object sender, EventArgs e)
{
InitChart(); // 声明新对象时，初始化其画图组件
PartialData = string.Empty;
_spManager.StartListening();
_spManager.Send("12\r"); // 开始电压测量
}
/*
* Handles the "Send"-buttom click event
* @param sender - contains a reference to the control/object that raised the event.
* @param e - contains the event data.
*/
private void btnSend_Click(object sender, EventArgs e)
{
_spManager.Send(tbDataTransmit.Text);
}