Question

我正在通过串口通信开发体重秤程序但我这样做....例如：

当我的时候使用put项目 app获得重量，然后停止与规模通信首先获得重量设置 gridviewrowcolumn然后在用户放置时自动进行行更改关于规模通信的第二项开始和相同的程序。

这是我的代码：

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;
using System.Threading;


namespace serial
{
    public partial class Form1 : Form
    {
        private SerialPort _serialPort;         //<-- declares a SerialPort Variable to be used throughout the form
        private const int BaudRate = 9600;   

        public Form1()
        {
            InitializeComponent();

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            #region Form Load
            try
            {
                //getRawWeight();
                string[] portNames = SerialPort.GetPortNames();     //<-- Reads all available comPorts
                foreach (var portName in portNames)
                {
                    comboBox1.Items.Add(portName);                  //<-- Adds Ports to combobox
                }
                comboBox1.SelectedIndex = 0;      
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            #endregion
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (_serialPort != null && _serialPort.IsOpen)
                _serialPort.Close();
            if (_serialPort != null)
                _serialPort.Dispose();
            //<-- End of Block

            _serialPort = new SerialPort(comboBox1.Text, BaudRate, Parity.None, 8, StopBits.One);       //<-- Creates new SerialPort using the name selected in the combobox
            _serialPort.DataReceived += SerialPortOnDataReceived;       //<-- this event happens everytime when new data is received by the ComPort
            _serialPort.Open();     //<-- make the comport listen
            textBox1.Text = "Listening on " + _serialPort.PortName + "...\r\n";
        }
        private delegate void Closure();
        private void SerialPortOnDataReceived(object sender, SerialDataReceivedEventArgs serialDataReceivedEventArgs)
        {
            if (InvokeRequired)     //<-- Makes sure the function is invoked to work properly in the UI-Thread
                BeginInvoke(new Closure(() => { SerialPortOnDataReceived(sender, serialDataReceivedEventArgs); }));     //<-- Function invokes itself
            else
            {
                while (_serialPort.BytesToRead > 0) //<-- repeats until the In-Buffer is empty
                {
                    string reading = "";
                    reading += string.Format("{0:X2} ", _serialPort.ReadByte());
                    //<-- bytewise adds inbuffer to textbox
                    //string reading = System.Text.Encoding.UTF8.GetString(_serialPort);
                    textBox1.Text = reading.Substring(13);
                }
            }
        }
    }
}

Answer 1

我会打开一次串口，然后将其打开，直到你关闭程序。您是否已成功与规模沟通？此外，像scale这样的设备有自己的按钮，每次推送时都会通过串口发送数据。您的代码有什么问题？它写的是什么呢？

如何在c＃中从体重秤上显示Gridview的权重？

1 个答案: