主机向从机发送 AND 保存上传数据

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;

namespace com
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            
            serialPort1.PortName = "COM6";

            serialPort1.BaudRate = 115200;

            serialPort1.Open();
            
            byte[] data = Encoding.Unicode.GetBytes(textBox1.Text);

            string str = Convert.ToBase64String(data);

            serialPort1.Write(str);

            MessageBox.Show("数据发送成功！", "系统提示");
        }

        private void button2_Click(object sender, EventArgs e)
        {
            
            byte[] data =  Encoding.Unicode.GetBytes(serialPort1.ReadExisting());

            textBox2.Text = Encoding.Unicode.GetString(data);

            serialPort1.Close();
            string result = textBox2.Text ; //输入文本
            StreamWriter sw = File.AppendText(@"D:\\data.txt"); //保存到指定路径
            sw.Write(result);
            sw.Flush();
            sw.Close();

            MessageBox.Show("数据接收成功！", "系统提示");
        }
    }
}

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