Serial Port Class & Component

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I'm being tasked with the job of creating a serial ports class component or
dll for use in other applications. This ports component/dll will replace an
existing COM dll (VB6 using old comm32.dll).

I want to know if it is better to start with the new VS2005 ports class or
the new serial ports component?

I also need to know if one has more functionality then the other (ports
class vs serial ports component)?

I will need to create a collection of serial ports based on the client
application's needs. I will need to be able to communicate with all of the
ports required for the using client application.

I am new to serial ports communications programming. Any and all insight
would be greatly appreciated!!!

I also need to know if USB/USB2 ports can be used with either of these items
(ports class vs serial ports component).

Thanks JerryM


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