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   源码介绍

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串口电子秤测试程序，源码描述： 一种简单、快速读取电子秤的程序。 可以设置串口的一些参数 欢迎感兴趣用户下载学习，C#的程序，还不错，可以借鉴。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO.Ports;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        public delegate void HandleInterfaceUpdataDelegate(string text); //委托，此为重点 
        private HandleInterfaceUpdataDelegate interfaceUpdataHandle;
        bool isClose = false;
        private void Form1_Load(object sender, EventArgs e)
        {
            setOrgComb();
            GetSetComb(false);
            lblNote.Text = "数据有个规律平稳的显示重量，说明正常\n否则不平稳或者无数据，说明连接有问题\n或者电子秤有问题";
        }

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                interfaceUpdataHandle = new HandleInterfaceUpdataDelegate(UpdateTextBox);//实例化委托对象 

                serialPort1.DataReceived  = new SerialDataReceivedEventHandler(serialPort1_DataReceived);
                if (!serialPort1.IsOpen)
                {
                    serialPort1.Open();
                }
                setControlEnable(true);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
                return;
            }
            timer1.Enabled = true;
        }

        private void button2_Click(object sender, EventArgs e)
        {
            try
            {
                timer1.Enabled = false;
                serialPort1.Close();
                setControlEnable(false);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            //if (isClose)
            //{
            //    return;
            //}

            //try
            //{
            //    string send = ""   (char)(27)   'p';

            //    serialPort1.Write(send);
                
            //}
            //catch (Exception ex)
            //{
            //    MessageBox.Show(ex.Message);
            //    button2_Click(null, null);
            //}
        }
        /// <summary>
        /// 保存设置
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnSave_Click(object sender, EventArgs e)
        {
            try
            {
                GetSetComb(true);
            }
            catch { }
        }
        private void setOrgComb()
        {
            cmbPortName.Text = "COM1";
            cmbBaudRate.Text = "9600";
            cmbDataBti.Text = "8";
            cmbStopBit.Text = "1";
            cmbParity.Text = "None";

        }
        private void GetSetComb(bool b)
        {
            try
            {
                serialPort1.PortName = cmbPortName.Text.Trim();
                serialPort1.BaudRate = Convert.ToInt32(cmbBaudRate.Text);
                serialPort1.Parity = (Parity)Enum.Parse(typeof(Parity), cmbParity.Text.Trim());
                serialPort1.StopBits = (StopBits)Enum.Parse(typeof(StopBits), cmbStopBit.Text.Trim());
                serialPort1.DataBits = Convert.ToInt32(cmbDataBti.Text.Trim());
                if (b)
                {
                    MessageBox.Show("保存成功！");
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            richTextBox1.Text = "";
        }

        private void button4_Click(object sender, EventArgs e)
        {
            try
            {
                timer1.Enabled = false;
                if (serialPort1.IsOpen)
                {
                    serialPort1.Close();
                }
                this.Dispose();
                Application.Exit();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

        }
        private void setControlEnable(bool b)
        {
            button1.Enabled = !b;
            button2.Enabled = b;
            button3.Enabled = !b;
            button4.Enabled = !b;
            groupBox1.Enabled = !b;


        }

        private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {

            int i = serialPort1.BytesToRead;

            if (i > 0)
            {

                string strTemp = serialPort1.ReadLine();
                this.Invoke(interfaceUpdataHandle, strTemp);
            }



        }
        private void UpdateTextBox(string text)
        {

            richTextBox1.Text = text   "\n\r"   richTextBox1.Text;


        }
        
        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            try
            {
                isClose = true;
                timer1.Enabled = false;

                serialPort1.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            
        }

       
    }
}