C#实现串口中继

前一段时间为了测试硬件产品，发现，串口转发不太方便，于是自己写了一个简单的串口中继小程序，是基于C#开发的，可以将两个串口互通，方便自己在程序的使用，目前看起来应用还可以，现在把源码放这里，供大家参考。

串口使用的是C#提供的控件，直接拖动的控件，实现了相关的事件，界面如图：

核心代码也很简单

private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e){Thread.Sleep(200);byte[] byteRead = new byte[serialPort1.BytesToRead];serialPort1.Read(byteRead, 0, byteRead.Length);setText1( "接收数据：" + ToHexStrFromByte(byteRead));if (serialPort2.IsOpen == true){serialPort2.Write(byteRead, 0, byteRead.Length);setText2( "发送数据：" + ToHexStrFromByte(byteRead));}}private void serialPort2_DataReceived(object sender, SerialDataReceivedEventArgs e){Thread.Sleep(200);byte[] byteRead = new byte[serialPort2.BytesToRead];serialPort2.Read(byteRead, 0, byteRead.Length);setText2( "接收数据：" + ToHexStrFromByte(byteRead));if (serialPort1.IsOpen == true){serialPort1.Write(byteRead, 0, byteRead.Length);setText1("发送数据：" + ToHexStrFromByte(byteRead));}}

为了打印使用的一个小函数：

/// <summary>/// 字节数组转16进制字符串：空格分隔/// </summary>/// <param name="byteDatas"></param>/// <returns></returns>public string ToHexStrFromByte(byte[] byteDatas){StringBuilder builder = new StringBuilder();for (int i = 0; i < byteDatas.Length; i++){builder.Append(string.Format("{0:X2} ", byteDatas[i]));}return builder.ToString().Trim();}