SerialPort vs CreateFile

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I can access any COM Port using SerialPort class in c#

and also i can use the CreateFile API to get handle for Com and use to communicate with

is this a difference between these two method?

as if i can't do connection to Com using SerialPort can i do this using CreateFile API?

Posted 18-Jun-13 23:27pm

amir tarek

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Leo Chapiro 19-Jun-13 7:03am

I fear that is not the right way, you need to understand why you can't do connection using SerialPort... What is the trouble here, can you get some code and the exactly error?

AlphaDeltaTheta 19-Jun-13 7:49am

He's asking the difference between the two

Jochen Arndt 19-Jun-13 8:38am

I'm not absolutely sure but believe that the SerialPort class uses the common API functions for serial I/O internally (CreateFile, ReadFile, WriteFile, SetCommXXX). So there should be no difference regarding the communication itself.

Leo Chapiro 19-Jun-13 8:56am

I think that too, Jochen - that will be surely the same API in the end (CreateFile)

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AlphaDeltaTheta · Answer 1 · 2013-06-19T01:48:00

Solution 1

CreateFile to COM port, sometimes requires admin access (not always).
SerialPort is the preferred way since it allows you to cotrol various other niche options too, that isn't easily available in CreateFile

See MSDN[^] for details.

Posted 19-Jun-13 1:48am

AlphaDeltaTheta

Updated 19-Jun-13 1:54am

v2

Comments

Leo Chapiro 19-Jun-13 8:37am

>CreateFile to COM port, sometimes requires admin access (not always). Yea, only on bad days (Sundays and Saturdays usually not ;)

AlphaDeltaTheta 19-Jun-13 11:31am

I have ran into that sort of things... while opening a Bluetooth COM port