How can I put a newline into a TextBox, which only occurs when the string "CRLF" is received

Question

How can I put a newline into a TextBox, which only occurs when the string "CRLF" is received

This is what I am trying to achieve.

This is my textbox output at the moment

The line which shows CRLF?J] should be just a blank line.

This is the code I am using.

    private void WriteData(string text)
    {
        if (text == "CRLF")
        {               
            serial.DiscardInBuffer();   // clear "CRLF" from serial port buffer
            serial.BaseStream.Flush();
            OutputTextBox.AppendText("\n\n");
        }
        else
        {
            OutputTextBox.ScrollToEnd();
            OutputTextBox.AppendText(text);
            serial.BaseStream.Flush();
            OutputTextBox.AppendText("\n");
        }
    }

Any and all help gratefully received.

Answer 1

This is my new code, works fine now, thanks all for contributing @Selvin pointed out the right path with his comment.

    private void WriteData(string text)
    {
        string SerialData = text;


        if (SerialData.Contains ("CRLF"))
        {
            serial.DiscardInBuffer();   // clear "CRLF" from serial port buffer
            OutputTextBox.AppendText("\n");
        }
        else
        {
            OutputTextBox.ScrollToEnd();
            OutputTextBox.AppendText(text + "\n");
        }
    }