C# - Send ENQ, CR, LF to COM Port

Thank you.
I'm using C# with System.IO.Ports.
The manual device, tells us that we need to send this sequence, but without citing the language.
[ENQ, 3, 0, CR, LF]

[enquiry, ID, CR, LF] // "3,0" is the ID of device "30"

I use the code below and works with others devices.

 private void timer1_Tick(object sender, EventArgs e)
        {
                string ID = "30";
                CommPort com = CommPort.Instance;
                ID = ConvertEscapeSequences(ID);
                com.Send(ID);
        }

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Thanks in advance,
ocaccy

Thank you.
ocaccy