想请教大神，一个串口能发送数据，然后自己接收数据么？
我这样写完 用虚拟串口测试 开启两个程序可以互相收发
开启一个程序，打开串口，进去发送数据没有反应。订阅事件Sp1_DataReceived不触发。
求大神帮忙
private void Form1_Load(object sender, EventArgs e)
{
if (cbCom.Items.Count > 0)
{
cbCom.SelectedIndex = 0;
sp1.ReceivedBytesThreshold=1;
sp1.BaudRate = 9600;
sp1.DtrEnable = true;
sp1.RtsEnable = true;
sp1.ReadTimeout = 1000;
sp1.ReceivedBytesThreshold = 1;
sp1.DataReceived += new
SerialDataReceivedEventHandler(this.Sp1_DataReceived);
sp1.Open();
}
}
private void Sp1_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
if (sp1.IsOpen)
{
DateTime dt = DateTime.Now;
txtReceived.Text += dt.GetDateTimeFormats('f')[0].ToString() +"\r\n";
try
{
Byte[] receivedData = new Byte[sp1.BytesToRead];
sp1.Read(receivedData, 0, receivedData.Length);
AddContent(new UTF8Encoding().GetString(receivedData));
}
catch (System.Exception ex)
{
MessageBox.Show(ex.Message, "出错提示!!!!!");
txtSendStr.Text = "";
}
}
else
{
MessageBox.Show("请打开某个串口", "错误提示");
}
}
