C# Winform--SerialPort串口通讯(ASCII码发送)

1.代码部分

        private SerialPort serialPort = new SerialPort();private void button1_Click(object sender, EventArgs e){serialPort.BaudRate = 9600;serialPort.Parity = Parity.None;serialPort.StopBits = StopBits.One;serialPort.DataBits = 8;serialPort.PortName = "COM3";serialPort.DataReceived += SerialPort_DataReceived;serialPort.Open();}private void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e){Thread.Sleep(100);byte[] bs = new byte[serialPort.ReadBufferSize];serialPort.Read(bs, 0, serialPort.ReadBufferSize);string ss = Encoding.ASCII.GetString(bs);string[] parts = ss.Split(new char[] { '\0' },                     StringSplitOptions.RemoveEmptyEntries);if (parts.Length > 0){string result = parts[0];//"BUSY\r\nEND\r\n"}}private void button2_Click(object sender, EventArgs e){List<byte> buffer = new List<byte>();buffer.AddRange(Encoding.ASCII.GetBytes("1111"));//buffer.AddRange(Encoding.ASCII.GetBytes("2222"));buffer.Add(0x0D);serialPort.Write(buffer.ToArray(), 0, buffer.Count);}private void button3_Click(object sender, EventArgs e){if(string.IsNullOrEmpty(textBox1.Text.ToString().Trim())){return;}List<byte> buffer = new List<byte>();var shi = textBox1.Text.ToString().Trim();buffer.AddRange(Encoding.ASCII.GetBytes(textBox1.Text.ToString().Trim()));//buffer.AddRange(Encoding.ASCII.GetBytes("1111"));buffer.Add(0x0D);serialPort.Write(buffer.ToArray(), 0, buffer.Count);}