How can I compare .NET SerialPort settings against API settings (apiBuildCommDCB)?

I need / want to update my VB6 serial comm port API to .NET SerialPort code.

I am still not getting it right.

In VB6, I am using this string to build the comm dcb via apiBuildCommDCB:

"57600,N,8,1"

This works fine.

In .NET, I have chosen these settings:

    _Port.BaudRate = 57600
    _Port.Parity = Parity.None
    _Port.DataBits = 8
    _Port.StopBits = StopBits.One
    _Port.Handshake = Handshake.None
    _Port.DtrEnable = True
    _Port.RtsEnable = True

It does not work, I am not receiving any data, so there must be something wrong.

Does anybody see what I am doing wrong or knows how I could compare the 2 versions against each other?

Thank you!