实例介绍
【实例简介】需要先打开串口 才能使用该工具
【实例截图】
【核心代码】
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.IO.Ports; namespace CShapeSerialPort { public partial class MainFrom : Form { private SerialPortUtil comPort = new SerialPortUtil(); private System.Timers.Timer timer = new System.Timers.Timer(); public MainFrom() { InitializeComponent(); } private void COMOpen() { if (!comPort.IsOpen) { try { comPort.OpenPort(); btnOpenClose.Text = "关闭串口"; label7.Text = comPort.PortName "已打开"; label7.ForeColor = System.Drawing.Color.Green; } catch (System.Exception ex) { MessageBox.Show(ex.Message, "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Error); } if (!comPort.IsOpen) { btnOpenClose.Text = "打开串口"; label7.Text = " "; } } } private void COMSend() { try { if (checkBoxHEX.Checked) { comPort.WriteData(SerialPortUtil.HexToByte(txtSend.Text)); } else { comPort.WriteData(txtSend.Text); } } catch (System.Exception ex) { //MessageBox.Show("发送错误:" ex.Message); } } private void COMClose() { if (comPort.IsOpen) { try { //comPort.DiscardBuffer(); //timer1.Enabled = false; //chkBoxSendOntime.Checked = false; comPort.ClosePort(); btnOpenClose.Text = "打开串口"; label7.Text = comPort.PortName "已关闭"; label7.ForeColor = System.Drawing.Color.Red; } catch (System.Exception ex) { btnOpenClose.Text = "关闭串口"; label7.Text = " "; MessageBox.Show(ex.Message, "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Error); } } } private void MainFrom_Load(object sender, EventArgs e) { //comboBox设置数据 SerialPortUtil.SetPortNameValues(comboBoxDKH); if (comboBoxDKH.Items.Count == 0) { MessageBox.Show("未扫描到该计算机的COM口,请添加硬件后重新打开程序!", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information); this.Close(); } SerialPortUtil.SetBauRateValues(comboBoxBTL); SerialPortUtil.SetDataBitsValues(comboBoxSJW); SerialPortUtil.SetParityValues(comboBoxXYW); SerialPortUtil.SetStopBitValues(comboBoxTZW); comboBoxDKH.SelectedIndex = 0; comboBoxBTL.SelectedIndex = 8; comboBoxSJW.SelectedIndex = 3; comboBoxXYW.SelectedIndex = 0; comboBoxTZW.SelectedIndex = 1; comboBoxDKH.SelectedIndexChanged = (o, ex) => { COMClose(); comPort.PortName = comboBoxDKH.SelectedItem.ToString(); COMOpen(); }; comboBoxBTL.SelectedIndexChanged = (o, ex) => { COMClose(); comPort.BaudRate = (SerialPortBaudRates)Convert.ToInt32(comboBoxBTL.SelectedItem); COMOpen(); }; comboBoxSJW.SelectedIndexChanged = (o, ex) => { COMClose(); comPort.DataBits = (SerialPortDatabits)Convert.ToInt32(comboBoxSJW.SelectedItem.ToString()); COMOpen(); }; comboBoxXYW.SelectedIndexChanged = (o, ex) => { COMClose(); comPort.Parity = (Parity)(comboBoxXYW.SelectedIndex); COMOpen(); }; comboBoxTZW.SelectedIndexChanged = (o, ex) => { COMClose(); comPort.StopBits = (StopBits)(comboBoxTZW.SelectedIndex); COMOpen(); }; comPort.DataReceived = new DataReceivedEventHandler(comPort_DataReceived); comPort.Error = new SerialErrorReceivedEventHandler(comPort_Error);; //COMOpen(); comPort.PortName = comboBoxDKH.SelectedItem.ToString(); comPort.BaudRate = (SerialPortBaudRates)Convert.ToInt32(comboBoxBTL.SelectedItem); comPort.DataBits = (SerialPortDatabits)Convert.ToInt32(comboBoxSJW.SelectedItem.ToString()); comPort.Parity = (Parity)(comboBoxXYW.SelectedIndex); comPort.StopBits = (StopBits)(comboBoxTZW.SelectedIndex); chkBoxSendOntime.Checked = false; checkBoxHEX.Checked = true; txtTime.Text = "200"; timer.Elapsed = new System.Timers.ElapsedEventHandler(timer_Elapsed); } void comPort_Error(object sender, SerialErrorReceivedEventArgs e) { MessageBox.Show(e.ToString()); } void comPort_DataReceived(DataReceivedEventArgs e) { this.txtRecv.BeginInvoke( new MethodInvoker(()=>{ if (checkBoxHEX.Checked) { this.txtRecv.AppendText(SerialPortUtil.ByteToHex(e.DataRecv));//输出到主窗口文本控件 } else { this.txtRecv.AppendText(System.Text.Encoding.Default.GetString(e.DataRecv));//输出到主窗口文本控件 } } ) ); } private void btnOpenClose_Click(object sender, EventArgs e) { if (comPort.IsOpen) { COMClose(); } else { COMOpen(); } } private void btnSendOnce_Click(object sender, EventArgs e) { COMSend(); } private void timer1_Tick(object sender, EventArgs e) { if (chkBoxSendOntime.Checked) { if (txtTime.Text=="") { timer1.Enabled = false; MessageBox.Show("请输入时间!"); } else { if (comPort.IsOpen) { COMSend(); } } } } void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e) { //throw new NotImplementedException(); if (chkBoxSendOntime.Checked) { if (txtTime.Text == "") { timer1.Enabled = false; MessageBox.Show("请输入时间!"); } else { if (comPort.IsOpen) { COMSend(); } } } } private void chkBoxSendOntime_CheckedChanged(object sender, EventArgs e) { if (chkBoxSendOntime.Checked) { if (txtTime.Text == "") { MessageBox.Show("请输入时间!","提示信息",MessageBoxButtons.OK,MessageBoxIcon.Information); chkBoxSendOntime.Checked = false; } else { try { //timer1.Interval = Convert.ToInt32(txtTime.Text); //timer1.Enabled = true; timer.Interval = Convert.ToInt32(txtTime.Text); timer.Enabled = true; } catch (System.Exception ex) { //timer1.Enabled = false; timer.Enabled = false; MessageBox.Show("时间输入错误:" ex.Message); } } } } private void btnClear_Click(object sender, EventArgs e) { txtRecv.Text = ""; } private void txtTime_TextChanged(object sender, EventArgs e) { try { // timer1.Interval = Convert.ToInt32(txtTime.Text); // timer1.Enabled = true; timer.Interval = Convert.ToInt32(txtTime.Text); timer.Enabled = true; } catch (System.Exception ex) { //timer1.Enabled = false; timer.Enabled = false; MessageBox.Show("时间输入错误:" ex.Message); } } } }
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