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; namespace serialConn { public delegate void NewsDelegate(byte[] time);//跨窗体调用第一步，委托 public partial class Form1 : Form { private delegate void SafeCall(string text);//声明委托 public static NewsDelegate news;//跨窗体委托的实例化（第三步1） public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { for (int i = 1; i < 10; i++) { CmbSerialNum.Items.Add("COM" + i.ToString()); } CmbBuad.Items.Add("2400"); CmbBuad.Items.Add("4800"); CmbBuad.Items.Add("9600"); CmbBuad.Items.Add("19200"); CmbBuad.Items.Add("115200"); news = News;//跨窗体调用（第三步2） } private void BtnOpen_Click(object sender, EventArgs e) { if (CmbBuad.Text == "" || CmbSerialNum.Text == "") { MessageBox.Show("请选择串口号和波特率"); } try { serialPort1.Open(); BtnOpen.Enabled = false; BtnClose.Enabled = true; } catch { MessageBox.Show("串口打开错误，请进一步检查"); } } private void BtnClose_Click(object sender, EventArgs e) { try { serialPort1.Close(); BtnClose.Enabled = false; BtnOpen.Enabled = true; } catch { MessageBox.Show("无法关闭串口"); } } private void CmbSerialNum_SelectedValueChanged(object sender, EventArgs e) { serialPort1.PortName = CmbSerialNum.Text.ToString(); } private void CmbBuad_SelectedValueChang