简单串口通讯_参数设置.doc

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;namespace 串口通讯 public partial class frmDataExchange : Form public frmDataExchange() InitializeComponent(); private void frmDataExchange_Load(object sender, EventArgs e) int index; int count = 1; for (int i = 1; i = 10; i+) this.cboxCOM.Items.Add(COM + i); for (int i = 1; i 10; i+) index = count * 300; this.cboxBaudRate.Items.Add(index); count *= 2; this.cboxCOM.SelectedIndex = 0; this.cboxBaudRate.SelectedIndex = 0; this.txtSend.Enabled = false; this.txtRecieve.Enabled = false; this.btnSend.Enabled = false; private void cboxCOM_SelectedIndexChanged(object sender, EventArgs e) this.spDataExchange.PortName = this.cboxCOM.Text; private void cboxBaudRate_SelectedIndexChanged(object sender, EventArgs e) this.spDataExchange.BaudRate = int.Parse(this.cboxBaudRate.Text); private void btnOpen_Click(object sender, EventArgs e) try if (btnOpen.Text = 打开串口) btnOpen.Text = 关闭串口; this.spDataExchange.Open(); MessageBox.Show(已经打开串口); this.txtSend.Enabled = true; this.txtRecieve.Enabled = true; this.txtSend.Enabled = true; else btnOpen.Text = 打开串口; this.spDataExchange.Close(); MessageBox.Show(已经关闭串口); catch (Exception ex) MessageBox.Show(ex.ToString(); private void btnSend_Click(object sender, EventArgs e) try if (txtSend.Text = string.Empty) MessageBox.Show(输入的字符串不能为空); txtSend.Focus(); else this.spDataExchange.WriteLine(txtSend.Text); txtSend.Text = ; txtSend.Focus(); catch (Exception ex) MessageBox.Show(ex.ToString(); private void spDataExchange_DataReceived(object sender, System.IO.