读取\\ r在C＃中通过串口发送？

Question

I'm sending a text by serial port to C#. This text contains \\r and it will become a new line in HyperTerminal. Now I want to read this \\r in C#. How can I do this?

    private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
    {
        RxString = serialPort1.ReadLine();

        this.Invoke(new EventHandler(DisplayText));
    }

    private void DisplayText(object sender, EventArgs e)
    {
        string str = RxString;

        if(str == "\r")
        {
            MessageBox.Show("This is a new line");
        }
    }

Answer 1

If you are using ReadLine() it will read to the line escape, this can be \\r, \\n or \\r\\n so by using the ReadLine() command you are automatically detecting your carriage return and removing it from the read string

https://msdn.microsoft.com/en-us/library/system.io.streamreader.readline%28v=vs.110%29.aspx

if for some reason you need to preserve the carriage return then you can use the Read() command

https://msdn.microsoft.com/en-us/library/ath1fht8%28v=vs.110%29.aspx