SerialPort serialPort1 = new SerialPort(“COM5”, 115200, Parity.None, 8, StopBits.One); //初始化串口設(shè)置
//定義委托
public delegate void Displaydelegate(byte[] InputBuf);
Byte[] OutputBuf = new Byte[8];
public Displaydelegate disp_delegate;

//接收數(shù)據(jù)委托
disp_delegate = new Displaydelegate(DispUI);
serialPort1.DataReceived += new SerialDataReceivedEventHandler(Comm_DataReceived);

//串口讀取數(shù)據(jù)處理函數(shù)
public void Comm_DataReceived(object sender, SerialDataReceivedEventArgs e)
{

Byte[] InputBuf = new Byte[8];

try
{
serialPort1.Read(InputBuf, 0,6); //讀取緩沖區(qū)的數(shù)據(jù),每次讀取6個(gè)字節(jié)的數(shù)據(jù)
System.Threading.Thread.Sleep(100);
this.BeginInvoke(disp_delegate, InputBuf);//disp_delegate是定義的委托事件，在委托事件中調(diào)用修改UI的程序
}
catch (TimeoutException ex) //超時(shí)處理
{
MessageBox.Show(ex.ToString());
}

}

//更新UI界面
public void DispUI(byte[] InputBuf)
{

string str = System.Text.Encoding.Default.GetString(InputBuf);
// Console.WriteLine(str);
string strW = str.Substring(0, 2);//截取str的子串，從index=0開始截取長(zhǎng)度為2的字符串
int OutStrW = int.Parse(strW);
string strS = str.Substring(2, 2);//截取str的子串，從index=2開始截取長(zhǎng)度為2的字符串
int OutStrS = int.Parse(strS);
OutstrWen = (OutStrW - 4).ToString();
textBox8.Text = strW;
textBox9.Text = (OutStrW - 4).ToString();
textBox10.Text = strS;
textBox11.Text = (OutStrS - 10).ToString();
}