简单问题求解

Question

        public static string ToHexString(byte[] bytes)
        {
            char[] chars = new char[bytes.Length * 3];
            for (int i = 0; i < bytes.Length; i++)
            {
                int b = bytes[i];
                chars[i * 3] = hexDigits[b >> 4];
                chars[i * 3 + 1] = hexDigits[b & 0xF];
                chars[i * 3 + 2] = ' ';
            }
            return new String(chars);
        }
        private void mycomm_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
        {
            int length = mycomm.BytesToRead;
            byte[] data = new byte[length];
            for (int i = 0; i < length; i++)
            {
                data[i] = (byte)mycomm.ReadByte();
            }            string str =(string ) ToHexString(data);
            aaa.Text = str;
            
        }
            
        }
           
为什么我的最后一个（tsend.Text = str;）提示有错啊 郁闷啊

Answer 1

tsend 是什么，aaa 又是什么？

Answer 2

将aaa.Text = str;改为：Invoke(New EventHandler(AddressOf GetData))
'自己转成C#:Invoke(New EventHandler(GetData));Public Sub GetData(ByVal sender As System.Object, ByVal e As System.EventArgs)
  aaa.Text = str;
End Sub

Answer 3

   public static string ToHexString(byte[] bytes)
        {
            char[] chars = new char[bytes.Length * 3];
            for (int i = 0; i < bytes.Length; i++)
            {
                int b = bytes[i];
                chars[i * 3] = hexDigits[b >> 4];
                chars[i * 3 + 1] = hexDigits[b & 0xF];
                chars[i * 3 + 2] = ' ';
            }
            return new String(chars);
        }
        private void mycomm_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
        {
            int length = mycomm.BytesToRead;
            byte[] data = new byte[length];
            for (int i = 0; i < length; i++)
            {
                data[i] = (byte)mycomm.ReadByte();
            }            string str =(string ) ToHexString(data);
            aaa.Text = str;
            
        }
            
        }不好意思写错了 是aaa.Text = str;
这个地方提示错误

Answer 4

这里要用互斥对象，，，给你一段代码参考void Form1_OnStringDataAccept(byte[] btRcv) //自定事件
        {
            string strRcv = "";//接收字符
            foreach (byte btEachRcv in btRcv)
                strRcv += Convert.ToChar(btEachRcv);            if (txtRcv.InvokeRequired)
            {
                CallBackRef cbr = new CallBackRef(ShowTextCallBack);
                try
                {
                    this.Invoke(cbr, new object[] { strRcv });
                }
                catch (Exception ex)
                {
                    return;
                }
            }
            else
            {
                txtRcv.Text +=  strRcv ;
                TransactRtnCode(strRcv);            }