C＃写字符串到COM端口？ [英] C# write string to com port?

问题描述

我用vspe到emualate com口，并添加连接器装置。在接下来的代码中，我尝试写的Hello World 港口和港口阅读。

I've used vspe to emualate com port and add the connector device. In the next code I try to write Hello World to port and read it from port.

    SerialPort ComPort = new SerialPort();
    ComPort.PortName = "COM2";
    ComPort.DataReceived +=
          new System.IO.Ports.SerialDataReceivedEventHandler(port_DataReceived);
    ComPort.WriteTimeout = 2000;
    ComPort.ReadTimeout = 2000;
    ComPort.Open();

    private void btnHelo_Click(object sender, EventArgs e)
    {
        ComPort.WriteLine("Hello World!");
    }
    private void btnReadFromPort_Click(object sender, EventArgs e)
    {
        rtbIncomingData.Text = ComPort.ReadLine();
    }
    private void port_DataReceived(object sender, SerialDataReceivedEventArgs e)
    {
        rtbIncomingData.Text = ComPort.ReadLine();
    }

当我点击 btnHello ，没有任何反应，尽管超时设置到2000年，我没有任何异常。但是，如果我尝试在2秒读取 btnReadFromPort 数据我有超时异常。

When I click btnHello, nothing happens, despite the timeout is set to 2000, I haven't any exceptions. But if I try to read data with btnReadFromPort in 2 seconds I have timeout exception.

这是vspe截图

的

推荐答案

您需要打开的端口：

ComPort.Open();

这篇关于C＃写字符串到COM端口？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！