How to write a code (C#.NET preferred) that controls rs232 from within a browser

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I need to send an on/off command to a projector connected to a local PC RS232. The control program must be web based running in the browser. I know that I can buy a commercial ActiveX component that would do the trick but they are quite expensive and I cannot use third party software (the company policy). Need to write it myself. Any step by step instructions would be greatly appreciated.

Posted 4-Mar-11 10:21am

CezW

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Piccadilly Yum Yum · Answer 1 · 2011-03-04T10:45:00

Solution 1

See the following link to manage serial com with c, then you can build a custom control in c#.net

RS 232 serial programming using fluke and PC.[^]

Posted 4-Mar-11 10:45am

Piccadilly Yum Yum

Comments

Sergey Alexandrovich Kryukov 4-Mar-11 17:16pm

But why? (see my answer).
--SA

CezW 4-Mar-11 17:41pm

Thanks for the tip, I will take a look at it.

-CW

Sergey Alexandrovich Kryukov · Answer 2 · 2011-03-04T11:16:00

Solution 2

What component?! No way!

If you prefer C#, just use this System.IO.Ports.SerialPort; see http://msdn.microsoft.com/en-us/library/system.io.ports.serialport.aspx[^].

—SA

Posted 4-Mar-11 11:16am

Sergey Alexandrovich Kryukov

Comments

CezW 4-Mar-11 17:36pm

I have tried this a few days ago. I believe, this method would work if the projector was connected directly to the server. In my case the projector is connected to a local PC.
I think, I need to build some kind of bridge between browser and local rs232.

-CW

Sergey Alexandrovich Kryukov 4-Mar-11 18:05pm

OK, build it, sure you need it! What's the difference? I/O is IO, client or server. In terms of serial I/O this part of the system should not use any notion of you client or server.

This is separate topic. If you already developed a server, you should have used remoting or WCF. Do you do it? If not, I would not understand what can your server do without some communication layer. If you need recommendation of such communication, ask follow-up question. I just don't know what advice you may need...
--SA